Муниципальное общеобразовательное учреждение – гимназия № 1
Урок геометрии в 11 классе
Тема: «РЕШЕНИЕ ПЛАНИМЕТРИЧЕСКИХ ЗАДАЧ
МЕТОДОМ ПЛОЩАДЕЙ»
Автор: Дацко Елена Владимировна
учитель математики
г. Клин, 2014 год
Содержание
Стр.
1. Цель и задачи урока………………………………………………………………………...…3
2. План урока……………………………………………………………………………..…3 – 11
2.1. Актуализация знаний……………………………………………………………………3 – 4
2.2. Устная работа………………………………...………………………………………….5 – 7
2.3. Работа на уроке по вариантам с различной сложностью……………………………..7 – 9
2.4. Самостоятельная работа контролирующего характера……………………………10 – 11
2.5. Итог урока. Домашнее задание с подробным разбором задач....……………….…11 – 17
3. Литература……………………………………………………………………………………18
Слайд 2
Цель урока: повторение и обобщение знаний о методе площадей в решении задач.
Задачи:
– обучающие: обобщить и систематизировать знания о методе площадей, отработать умения применить формулы в решении задач.
– развивающие: развить познавательные умения,
– воспитательные: развить положительное отношение к знаниям.
Тип урока: урок повторения.
Ход урока
I. Актуализация знаний.
Слайд 3
Площади треугольников, имеющих равные высоты (общую высоту), относятся как стороны соответствующие этим высотам.
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_1.png)
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_2.jpeg)
Рисунок 1
Слайд 4
Площади треугольников, имеющих равные стороны, относятся как соответствующие этим сторонам высоты.
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_3.png)
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_4.jpeg)
Рисунок 2
Слайд 5
Площади треугольников, имеющих равный угол (или общий угол), относятся как произведение сторон, содержащий этот угол.
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_5.png)
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_6.jpeg)
Рисунок 3
Слайд 6
Медиана делит треугольник на два равновеликих треугольника.
Три медианы треугольника делят его на шесть равновеликих треугольников.
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_7.png)
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_8.jpeg)
Рисунок 4
Слайд 7
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_9.png)
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_10.jpeg)
Рисунок 5
II. Устная работа.
Слайд 8 Случай, когда треугольники имеют общую высоту.
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_11.jpeg)
Рисунок 6
Дано:
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_12.png)
Найти:
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_13.png)
Решение:
имеют общую высоту ![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_15.png)
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_18.png)
Ответ: ![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_19.png)
Слайд 9
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_20.jpeg)
Рисунок 7
Дано:
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_21.png)
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_22.png)
Найти:
![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_23.png)
Решение:
имеют общую высоту ![](https://fsd.videouroki.net/html/2015/05/08/98711067/98711067_25.png)
т. к.
то
Ответ: 20.
Вывод:
1) Отношение площадей треугольников, имеющих общую высоту равно отношению сторон, к которым проведена высота.
2) Если же стороны, к которым проводится высота равны, то и площади треугольников также равны.
3) Во сколько раз отношение сторон треугольников, к которым проводится высота больше (меньше), во столько раз и площади больше (меньше).
Слайд 10
Случай, когда треугольник и параллелограмм имеют общую высоту.
Рисунок 8
Дано:
параллелограмм,
Найти:
Решение:
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
Ответ: 8.
Вывод: В этом случае отношение площадей треугольника и параллелограмма равно отношению их высот. Высота параллелограмма есть высота треугольника. Но в нахождении площади треугольника присутствует коэффициент
, а, значит, составляя и решая данную пропорцию, получаем 8.
Слайд 11
Рисунок 9
Дано:
![](data:image/png;base64,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)
![](data:image/png;base64,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)
Найти:
![](data:image/png;base64,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)
(Отношение площадей, имеющих общий угол равно отношению произведения сторон, заключающих данный угол).
– общая, ![](data:image/png;base64,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)
![](data:image/png;base64,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)
Ответ: ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAXCAIAAABS2iKRAAAA30lEQVR4nGP5//8/A17Agl+aRBUfP37U19d/8OABThVnzpx59OgRTjMOHDhgbm6O05Y7d+7w8fHx8PDgVLF27drKykoIX1JS8vnz5+gqysEAyGBiYkKTZkDz7b9//3C6FA8gWgUjIyOaBDy+WND4cHD48GFgGBYWFqLb8uXLF0jA2IIBihmRkZGQqOno6MDijh07digpKcXExGhpaWF3qYqKytWrVx0cHIAWw8MXRYWqqmpJSYm1tbWnpyd2FRAgJSWloKCA3ZaamhpgnH3+/Hn58uXYVbS0tDDgAIRDHQAa/lSZ1DzFmQAAAABJRU5ErkJggg==)
Слайд 12
Рисунок 10
Дано:
– параллелограмм,
– медиана
– медиана ![](data:image/png;base64,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)
– середина ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAAMCAIAAADgcHrrAAABFUlEQVR4nGP5//8/A+mAhQw9KNq2bdsWGxvb3Nx869atCRMmLFy4cPLkycXFxadOnUpJSdHW1saujYuLy8PDIyYmRlVVFajt169fQHZkZKSJiUlcXNzx48exa9u5cyfQn4mJiX19fUDu/v37KyoqgAwJCYmrV6/idOTu3bu3bt165cqVSZMmRUdHX758WVdXFygOZOjr62PX9vr1a6CrxMXFmZiYTp48eePGDTU1NUZGRqBUT09PY2Mjdm1A33NwcGzevHnPnj3z58+fM2cO0MFbtmy5du1aenq6k5MTRFlERERlZSXQcqi2JjAAMnx9fYGkp6cnRNzHxwfZkurqan5+fgZS401FRYWTk5NkbRA9JGuDAwDGeG05lw4ihgAAAABJRU5ErkJggg==)
![](data:image/png;base64,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)
Найти:
![](data:image/png;base64,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)
Решение:
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAXCAIAAADSqRWCAAADKUlEQVR4nGP5//8/wzACLAPtACqDUf8QB548edLS0rJ3796CgoLs7Gwa2YIJaOWfFy9ezJgx4/r161ZWVsPBPyYmJkCSiYnJ1taWRlZgBbTNP0uWLJk1axZNrUADNPTPzp07k5OTJSQkPn36xMfHR1D9ly9feHh4KLQU4Z/29nZ+fv67d+/++PFj6tSpFJq7bNmyKVOmiIuLf/78GcjA9M/x48fLysoOHz4MrAAjIyM/fvyor6/f0dGBx0y4FiD70qVLmzdvZmFh8fLy0tXVxeIfoFmXL1+WlZU9dOgQhZ4BgigwwKPAyMjo6NGjQMaOHTuUlJRiYmK0tLTwmwnXAgRAj3V2dgLDorS0FGgCXA3CP8CC1dvb++DBg/b29sS7W1JS8uXLlxC2trY2MESI1MjOzg5hqKioXL161cHBobCwsLKyEo+xcC1AcPr0aQUFBaB/Tp48iWwswj+NjY1v374FBiqydwmC58+fE68YaDewXgoODkYWVFVVLSkpsba29vT0hPuHoLGMYABkMDMzI4tD/QNM7kCfNDU1AUOLePcx4I4fiGXIABiWpqamhoaGWM2RkpIChjdBY+HA3Nz84cOHQDPNzMyw+Gf58uW/fv0CVn/9/f0k+QdXQGJt5gKrIzY2Ngj7yJEjQPLs2bPr168Huh5YbADdgN9YuBZjY2Ng42PLli1AW4DZHlhCnDlzBphcEf4BlhVomru6unJzczk5OW/fvj1z5sxTp05Nnz591apVAQEBQGcByyKSvI0JbGxs/v37B2QAHUeqFiAwBAO4FLzWxl7/ACMKWGpfu3YNaBkwrsXExIBJBVikysnJvXr1yt3dnaDdv3//njt37r59+6SlpUmNc0oAFv8Aox4YfSEhIcDWJNA/u3fv9vHxAcbyzZs3IyIikFMFHvDu3bv09HQ/Pz9gwTXA/uHl5Y2NjQUyIBUCMJkBSWBRDpFNSUkhxlxgTfrs2bOioqJJkyZRzbFEABq2d0RFRd3c3IqLiz08PGhnCxqgoX9YWVkDAwOBdQDtrMAEtPLP+fPnV6xYoaysvGDBAhpZgRXQyj9o5SndwHAbPwAAD1pdWTJZsLkAAAAASUVORK5CYII=)
Ответ: 10.
III. Работа на уроке.
1 ряд. Работа в парах (сидят слабый ученик и ученик средних способностей).
Решает I вариант – уровень «4»,
2,3 ряды – II вариант – уровень «4 – 5».
I вариант
Рисунок 11
Дано:
– параллелограмм,
Найти:
Решение:
1) Найдём какую часть
составляет от
Проведём диагональ
(общий угол
),
![](data:image/png;base64,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)
2) ![](data:image/png;base64,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)
3)
Ответ:
II вариант
Рисунок 12
Дано:
![](data:image/png;base64,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)
– медианы,
Найти:
Решение:
1)
(сторона
– общая),
2) Дополнительное построение
По теореме Фалеса
– средняя линия,
3)
подобен
(по двум углам),
– коэффициент подобия.
4) по свойству медиан
![](data:image/png;base64,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)
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAYCAIAAAA3ajm2AAACe0lEQVR4nGP5//8/w+ADLAPtAOxgJDlr27ZtsbGxzc3Nt27dmjBhAlBk9erVJSUlDx8+BLLfvXuno6PT2NiYmppKV2dxcXF5eHjExMSoqqpCnPXz509eXt5///4xMTEtWLCAmZk5KSkJjwk0cdbOnTuBOSkxMbGvrw8i8vXrV3l5+ZcvX164cIGPj8/CwgLoMno7a/fu3Vu3br1y5cqkSZOio6N///4NDCQZGRmgm168ePH06VM3Nzf8JlDfWa9fv/7165e4uDjQKSdPngSKHDlyxMzMDOigmTNnrlmzxsHBYenSpfR21uTJkzk4ODZv3rxnz5758+d///69p6ens7NTUVExICBg+/btwDADuptYZx06dOjGjRtAv+rq6vr5+TGQnn0goAkMgAxfX1+ICDBCgSRQO5AEGv7lyxeIODAHTJ8+PTs7G6ezgDm5t7d348aNHz9+NDQ0hDiL1OxDKgAai0sK6qzKysq4uDgg4/379x8+fIAI4s8+kpKSQCkIW1tb+/Lly6Q66+3bt8BQwOesw4cPA3MNkHHixAmg9UAGwezz/PlzUt2BBoSFhauqqvA5i5WVFVgGAhnARNrS0sJARPbBGlqMjIxkuxK50QB1FjBhAYtjaWnp0tJSU1NTYrIP1tCisD0SEREBTE76+voscD6yNCcnJ67sQ1NQXV3Nz8/PQLcWBDClzp07d9++fcAI6e/vx6VMRUUFGCL0cxaw2EtPTweWO8A0isdZEDfRz1nAuujZs2dFRUWQ/E4Q0K8ZKCoqCixiiouLgW0egorp5yxgGRQYGAiplwgCOjnr/PnzK1asUFZWBlZixKink7MMwYB49YO0iwEA0yVIVCBoDvwAAAAASUVORK5CYII=)
подставим в
получим ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEcAAAAcCAIAAAC8mzV8AAAEQklEQVR4nO1YaSh0URgeW7YsJTtJKDsfkeKLIilDFCVLoiyFsv/wy/LDkuySsstS+EO27HtkK0IkyU5E2YnvyZFhzAx3rqH0vT9Od94z9znvc5b3fc4VfXx8ZPw6E/3pAARi/1l9ka2trZWWlk5NTVVXVxcVFSUnJ4eGhlZUVEhKSn7VED/AamFhQUlJycrKan9/X01NbXp62tTUFJS2traWl5ednZ3pD8FilZ6eLicnt76+fn19XVxcTB+am/X09DCZzJmZmZWVFXFx8cPDQ21tbfg1NDTGx8cpQU1MTCQmJo6MjLD5WawyMjIwi5qamsPDw/RD52ElJSVoXV1d2fyXl5cXFxeUoCwsLMbGxt77Wayio6Mx0tDQkL29PfVQv8CkpaWDg4MpvYKl5uhnsUpJSTk+Pvb19e3q6qIVHU8TEhL68D/0S+gzq/r6evBJTU3V1dUlnqOjI0VFRZro7+17iv4zq4aGhtvbW6Sg3Nxc4klISMjPz0f+wHNWVlZUVNTGxsbg4KC5uXlTU5OPjw+W1NbW9vT01MvLi7+xz87O+vr6kAZtbGz4QxgdHUWLxGNpacmBVVtb22vv3NxcfHx8bW1tZGQkqCIrLi0tYTFramru7+9bW1tbWlpQcFRUVPiLhhimDBlCSkqKbwQ7O7uHh4f3fs71anJy0sDAABkzMDAQ9QSrgUl1cnK6urpCOmlubi4rK8ODmZmZvr4+3zFhnTEKkgTfCNyMM6vw8HC0JBkGBASgNTQ0JF0ODg5ouRU0VVXVg4MD8mxkZIRSwWNseXl5tp3DzSjBMl5YfSY18TaSBvb29t530QGnBPuSikTZftM0jpNKH5wq7BfrQI6T+m2wSATIAjExMb/qJvL3yRhsayVQgdvR0YHEk5aWtrq6mpeXBw/qHurH5uYmnk9OToyNjaFvQkJCPgl4d3dXXl7e39+vrq7+UmaJvWElUIGLuuTi4uLv76+np0dY3dzcyMjIoOAICwtXVVWJiIhQ0oGYiLCwMHd3d6RlXqwEKnC7u7txvoOCgnJycogHCl1LSwtpYH5+XlZWFgoDxD4PqKysvLu7GxsbW1BQwNb1hpVABS6uVe3t7YuLiwjCz88P+wdLhDsVKOH6uLOzw8d9EUoVb8XFxWEXvPazWAlU4AIKOhOzCyYQLownCWdtbQ0+uO1DrGAX1dXVUYUVExPz9PREzGx+FiseApeo2+3tbfK9AacOkVFSt4WFhRISElCbvb29lZWVUF7Z2dmZmZm4BXt4eHR2dmLFMDr+iWOGa2VERMSHmBCrjY2NOjo6OJNcWXETuI6OjkTdIlmR7w3o9fb2pqRuU58MD25ubsSD3YgWeQ+tiYnJ+fk58WMxP4n558k4dnGtV0TgDgwMYK2IugUxJpM5OztLgqOvbjkaDjZuKDRBuLJ6LXAZr9Qt+d4guM81CgoKSUlJNEF+lbZ4sX+w+DxLRsZQmAAAAABJRU5ErkJggg==)
Ответ: ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAXCAIAAABS2iKRAAAAxklEQVR4nGP5//8/A17Agl+aRBXHjx8vKys7fPgwThVGRkZHjx7FZwY7OzvF7iCs4siRI0Dy7NmzxsbG2FXY2Nj8+/ePpu5gZGREk4DHFwsaHw6AgXvmzJnCwkKcttiCAcKM379/z507d9++fdLS0v39/Vjc8e7du/T0dD8/PwcHB+wqxMXFnz17VlRUNGnSJOx+AQJRUVE3N7fi4mIPDw/sKlhZWQMDA5uamrCbcf78+RUrVigrKy9YsAC7CkMwwOptwqEOAC2uRrCM/DfmAAAAAElFTkSuQmCC)
IV. Самостоятельная работа контролирующего характера (дифференцированная).
1 ряд
I вариант
Рисунок 13
Дано:
– параллелограмм,
![](data:image/png;base64,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)
– диагональ,
![](data:image/png;base64,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)
Найти:
![](data:image/png;base64,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)
Решение:
Параллелограмм
и
имеют общую сторону ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAA90lEQVR4nGP5//8/AymAhSTVKBq2bdsWGxvb3Nx869atCRMmAEVOnDhx8uRJQUHBOXPmZGVlRUREoGjg4uLy8PCIiYlRVVUFajhz5sy0adMWLVoElDI3N2diYkK3YefOnUD/JCYm9vX1AbmVlZVz586FSKmrq2Nx0u7du7du3XrlypVJkyZFR0c/evRITk4Opx9ev37969cvcXFxoNVAdwNFhISEfvz4wcHBAWQ/fPhQXl4eRcPkyZOBcps3b96zZ8/8+fOBIr29vWVlZUZGRry8vD4+PocPHwb6qrCwEKqhCQyADF9fX4iIFRjAXWILBgwUxQORAADDKmA20gl5rgAAAABJRU5ErkJggg==)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
Ответ:
II вариант
Рисунок 14
Дано:
– параллелограмм,
– медиана,
![](data:image/png;base64,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)
Найти:
![](data:image/png;base64,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)
Решение:
– медианы, ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEYAAAAXCAIAAAA5nq6BAAADtklEQVR4nN1YSyi0URget5KFBQlJlOQyUVOU28QKC5fsNMyUJCHFSGH5syC5X3JJLCRlgVzCGJlhQZGFa3YuuaQYM2OIhf/pO9PQfJc5xuf/y7OYznfO+73P95xz3nOexv39/V3yu+D+vz9AfPxqSYuLi0qlsrGx8fT0tLOzEz341Wq1c3NzT09PhYWFzc3NERERwukuLy+bmprwVlVVVUVFBV/Y4+MjwlpbW8mjuEQfkry8vDIzM5ExPDycSPLx8TGbzRcXF8HBwampqQ5pgJubm4GBgePj46SkJAFJU1NTOp3O9igu0Yek5eVlHBVFRUXt7e2k5+XlpbKycnh4uLy8PDQ01CENEBcXh19XV1e5XM4Xc3JyEh0dbbFYQOfi4iI60YckjUazsLBwcHDQ3d1dUFDw+vrq5uaWm5vb0tISGRmZnZ1Nw0QwPj4+NDTEN4rZxXcg+fn5eUhIiOhEVkl3d3dI7e/vD93b29voWV9fT0xMJGRYQIVCQUmD4OLi4oCAAKPR6O3tbTeKisU+wd7e3Nw8PDyEJNGJrJJ6eno8PT1RoKurq6OjoyjTtra2rq4uDJWUlExOTlLSTExM9Pb2YmpMJhMadpLOzs76+/tRSG9vb8/PzzMzMykpKaITWSX9YYCGbd0xB6Th5+eHjU7JpGDAN4o1mZ+fJ21svx8icvJeCgwMvL29JW2pVLq/vy8QnJWVZVPyo0QETkq6vr6mD3Zaz1eJCKySyGFKA+IJ+SaPneezh6RnESbizGMjcmcT04Bv8jjz4Mju6+uLjY11wiJzEnHm2djY2NnZqa6u/hceD17E19f3p1nkDCTCHg+i09LSlpaWcFk1NDQMDg46tCo4nUdGRtbW1oKCgjo6OkhnVFQU3NbnMDuPB+j1ergKXI8xMTE5OTkOBXASEQh5PGzZ9PR09O/u7sIg4jZ0yHR/f19aWopvwlzYmOz0SFgeD5OI22l2dhZSZTIZjSROIntJbI+3srICw3t0dIRL0CEHAe6+q6srtVoNV8UXw/Z49fX1KpUKjYeHB4PB8E0iXo9HJEEhjmAsHaUkCXNjYm1ramqw5pwBdh5PwlQ2+bKtra2EhIRvEvF6PHginDZlZWWosS8xeXh45OXlES/CBtvjkVfI5oQXQ419k4jb46EHhwGOKTjC5ORkeP7p6WlCL4y9vT34tLCwsLGxMfYo2+NlZGRguVBIqF4Uem1tbXx8PI0eASJej6dmgEYdAxoaQMaAb5TT4wH5+fmU+WmIfuF/D38BYFKHanjiSHQAAAAASUVORK5CYII=)
(свойство диагоналей),
– общий,
имеют общую высоту, значит их площади
![](data:image/png;base64,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)
![](data:image/png;base64,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)
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![](data:image/png;base64,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)
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Ответ: 24.
V. Итог урока.
Домашнее задание. Ученику следует выбрать для решения две любые задачи. При желании можно выполнить всё задание.
Задача 1. В треугольнике
со сторонами
вписан параллелограмм
причём точки
лежат на сторонах
соответственно. Известно, что площадь параллелограмма составляет
площади треугольника
Найдите стороны параллелограмма.
Рисунок 15
Решение:
Пусть ![](data:image/png;base64,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)
1) ![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
2) ![](data:image/png;base64,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)
![](data:image/png;base64,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)
3) ![](data:image/png;base64,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)
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAHsAAAAXCAIAAACkk6cJAAAEgElEQVR4nO1YWShtURg+l2NMZCgkpRBSMivDA3nAJSHJRZGkUKbwgNQl8SKJQuHF+CAyRcgDkqlkzpSpjJEhiXC/ztI6+55zbJvj3u2493tYrb3X+vf+1rf+9a9/LeHT05PgP/4ihHwT+OfwX/G/DbHiExMT2dnZo6OjPLKRB/v7+0VFRcPDw2lpacnJyXzTeRFixR0dHcfHx3mkIicODw+rq6tXVlbc3d0VQ3E1NTUeecgPZ2dnlEpKSl5eXnxzYcNXi+ONjY21tbV8s2DDl1J8YGAgPj7eyMjo8vJSW1ubbzqyIVZ8bGwM5ezsrJOT0x/6WWRkZEtLy6vd2tvbHx8fw8PD+/r6YmJiCgsL19bWysvL2a2am5srKysNDQ2vrq5QkVCcmRfMz893d3cLhcKAgIDBwUFTU9Pz8/O9vT38SE7yXJiLFff09ERv9i/KCS5yd3R07O7upqeno66pqenn5xcdHW1pafmq4j9EeKmVmRdA+tLSUhz9srKy5ubmRkZG9PT0EP3ZFX+VPEfmXKPKxcVFbGxsYmIifCEhIUGi9fb2Fn/CSI6Pjx8eHpAt0CaY+Pv77+zswEpLSwuTurm56e3tjcft7e26ujrmdzo7O7e2tjIzM8kjogR0iYuLKysro32MjY2Pjo5I3dbWdmFhgQt/Zl4wPT1tZmaGL09OTra1tUEXX19f6C5hQpmnpqbe3NyA/Pr6+ruZBwYG9vT0CNgVByEkuWFhYajr6OiEhITMzMzk5eVJNAHq6urIguEF0NrBwYHZiiV8f39fUFCAaSedzc3N0Zqbm6uqqsrk3dXVhSHB7+gbLPne3t7FxcWKioqoqCjy8uDggIvE0kOg+CYCKsrKytfX1/Ak7LeI/sQ9qQllLhD5rJzMidxixQkDJjBFLi4ukI++UVFRQc5L6hJNgJWVFVYoFi/mhtlaU1NTVVUVFBSEATD7I41jBjEQWl1dxSqhb05OTu7u7hCX0RMq0PcyfVyav8whELi5ucFz0erq6gpHRqgNDQ21t7cnilOTD2dOIKTkpBnDAJOJCjaWpqYmbB0op6amQJQ2MWFtbe3j48M0BJKSkjD5GhoaoIXH5eVl0oTpQbmxsWFhYQF3yMjIiIiIyM/PJ1b4V2trK5YOtrihoaGGhgb6F5k+/tJ9HGXCzAtwNIVMMCkpKcHH6+vrTUxMcnJyJEwoc9QJ+f7+/nczxz6B+bOzs+MUx3V1dVNSUgSMpSE9YERwZGbS00CGGhwcjJK6BqnQx+8iSBj+FAEVeBkXkuxg5gUOIpA6JHjJhMkczsTk/A7m2D/19fUF1MflvJTArNrY2GBhvtXwA4HQubS0hJwPQQORgUcmMgF9yGbwrLiclxJYSh9M8O1AREbSjc0GXvkJ7+No4vCsuKJcSrDg7OwMR03kv6enp3xzYcNvcfzzX0qwoLi4GNETmTXOkHxzYYNYcYW4lGBBkghwGuTXfHNhw7Pi7JcSCgHkD0jIcDb+zJfjAqo4+6WEQgCnPg8PDwMDA76JvIKvc1uLQy/fFDjhFz9GxN6BPhikAAAAAElFTkSuQmCC)
![](data:image/png;base64,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)
4)
подобен
по двум углам.
как накрест лежащие,
![](data:image/png;base64,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)
соответственные углы.
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGIAAAAMCAIAAAAWOf9zAAAC8ElEQVR4nO1WTUgqURQWyYoWSYakRG0kfwj6MTGI2kjbFrmJHipChItaWIsiaGe2cCEJCVLQIspatAnaBIqChuAPCi6kopVCP5vMCtpU77N53DeM48xA0Ct4ZzFczpzvO+d+99wz0/D+/i76b3zWwBvx/Px8cnIyMDCg0Wi+oKDvaVWZSqXS2tpaOBx2Op1zc3PwJBKJpaWlWCxWqVRsNtv29rZcLudgIfGsbEKMMHi93q6urvv7+2Kx6HK5OCDn5+dfdnJVmW5ubgKBQKFQGBkZoTam1+vPzs6wWFxcHBwcjEajExMTzc3N9VhIPCubECMMHo8nEonIZLKxsTFumXQ63dvbm0D+T1pVJoPBgKdYLEZllLepqYlahEKh3d1d7Hlqaur4+LgeC4mvZXt4eLDb7Q6HA90xOzvLy4B0FotlfHwcYlGel5eXhYUF9Nrd3d3r6yvUZ2WgJ7JarbUQpVJ5e3tLBff29ubzeV7g+vo6Bo6IPpv29va2trYYucvlMrpJrVajrYiTnq+/vz+bzdYWTdikUunk5GQ6nV5dXRUCf3p6QtGAKxQKVAwPuhj39+DgALtFMVdXVz09PVQwDgPPy8tLlUrFSESHUMHX19es+nIAKY3+ynR6ejozM4PKMIxaW1sJhdFovLi4wLDo7u4mznr5iDHYJBIJbqJAOE4VGc1mMz4alEwwzKBcLoeLKf0w6q5BI8aloyeiQyhPvW7iBf6RKRgMbm5udnR0PD4+YoGNxeNx+DOZDCbF0dFRZ2enz+fj2BuJHxoaorO53e5UKjU9Pb2/v59MJiE6L8PKysrOzg4yLi8v0wO0Wq3JZKoHx8hHCkYiBoT1eLiBmBt+v7+vr68q068Po4NHR0fJQeFUOQSqjWewDQ8P40m6l5cBQjNe4c8OkwLt2djYSPfTW6mtrW1+fp4kqgepNW7gxsZGe3u7SMh/0z+3w8NDfNSEnNZnIKxArFtaWkQ/QibciC+AsAIpjUQ/QqbvYL8B1PPUGXzaGtsAAAAASUVORK5CYII=)
.
Составляем систему:
![](data:image/png;base64,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)
или ![](data:image/png;base64,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)
Ответ: 12 и 4 или 6 и 8.
Другой способ решения данной задачи:
1) ![](data:image/png;base64,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)
![](data:image/png;base64,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)
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![](data:image/png;base64,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)
Пусть ![](data:image/png;base64,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)
![](data:image/png;base64,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)
2) ![](data:image/png;base64,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)
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![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
Ответ: 6 и 8 или 12 и 4.
Задача 2. В треугольнике
на прямой
выбрана точка
так, что
Точка
середина стороны
Прямая
пересекает отрезок
в точке
Найдите площадь треугольника
если площадь треугольника
равна 120.
1 случай.
Рисунок 16
Решение:
![](data:image/png;base64,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)
(
медиана).
Пусть
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1)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
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2)
и ![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABsAAAALCAIAAAABYGGZAAABJ0lEQVR4nGP5//8/A1UBC3WNI8fE48ePl5WVHT58+MmTJy0tLXv37i0oKMjOzibfRCMjo6NHjwIZL168mDFjxvXr162srLCbqKCg8OjRIw8Pj23btgG5kpKSL1++hEhpa2tfvnwZwmZnZ4cwTExMgCQTE5OtrS2ylVAT//37B3T/gwcPzM3NISLPnz8nxslLliyZNWsWFhOBVj18+FBLS4uHhwcigsuNyGDnzp3JyckSEhKfPn3i4+NDMXH79u0nTpxwcnICmiIuLo7HjUeOHAGSZ8+evXnz5pQpU4CKP3/+DGRcvHjxzJkzhYWFUBOBwffx40egF3bs2AEk8XjTxsYGGERAhrGxcVRUFFxcQ0MDEqBQExkZGSMiIoCMmJgYPMYRA6ifwgEmLHuBXOOGDAAAAABJRU5ErkJggg==)
Ответ: 12.
2 случай.
Рисунок 17
Решение:
1)
медиана,
медиана;
Пусть
,
![](data:image/png;base64,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)
медиана,
![](data:image/png;base64,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)
2)
общая высота,
общая высота.
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
Ответ: 20.
Задача 3. Через точку
лежащую в треугольнике
проведены три прямые, параллельные всем сторонам треугольника. В результате треугольник разбился на 3 треугольника и 3 параллелограмма. Известно, что площади полученных треугольников равны соответственно 1;2,25и 4. Найдите сумму площадей полученных параллелограммов.
Рисунок 18
Найти: ![](data:image/png;base64,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)
Решение:
1) Рассмотрим ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACIAAAANCAIAAABD3yt2AAABwklEQVR4nL1Tv6tBYRi+fgwMEnYWcmJQFrqFklJil39AsZBSWG1YMSAMDBbKjzIhA2VVVnZJCiXc5/rq3A/n3kG5z3B6vuc9533e733fI7xerx/vh/AfPO5szuezQCB4u02lUtHr9SaTiVW2220ymUylUn8oBJPJZDqdymSyQqEQCAS8Xi+3zeVyaTabo9GItmk0GsPhkH77WQFms1k2m61Wq+D4nM/n/3qbTqeTTqcdDsdms0FRUBaLhU6n2+/32BEej8epEMRisWKxSLhWq332+LFZLpcej8fn85XL5XA4DCWfz1ssFkxrtVqpVCpOhQBHpVLJmf3OZjAY2Gw2EL/f73K5QqFQr9cLBoMajWY8Hs/ncyTtdrsPCptCLpcfj0eRSETKpUN3Nmgrht/v98F3u129Xq/VahjD6XQ6HA6YGcMw6D6tOJ1Odi0zmUw0GjUajRKJxO1209mxC2ipwWD4timVSmwgEongie6RIxpFSLvdphVUjfuhOKvV+nkDmwHblMvlcHXwRCIhlUo/Xv490Rm73c65VLSoVqvFYvHrNti6VqtlNpsxrYfQer3G70U48XjdhrmBM6RQKOLx+IP4BeLz2XN+WX7LAAAAAElFTkSuQmCC)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
2) Рассмотрим ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACEAAAANCAIAAACo6JB1AAABwUlEQVR4nLWUv6uBYRTH/RqwSAajhRJ/AAtKipRdXgaTwUImbJeNJFImvwYGCwn5MSCLnZKNVZIURbjf6603131uvYszvD3n0znv93nOOc8jeDwenA+b4NMCvzRutxufz/+sRrlc1mq1Op2OIYfDIR6PJxKJ14ROp+PxeGKx2Gq1SqfTRELWuN/vjUZjMpm8atTr9fF4/JYgFottNpvb7VapVPQf/xKyRrvdTiaTFotlv99LpVKQ5XKp0WhOpxOGgsvlMgm9Xg/E6/WmUqn/CFljvV47HA6Xy1UqlYLBIEg+nzcYDOjQZrNRKBRMwmAwwIbm83kmk6EoikgIGqPRyGQyYeHz+ex2eyAQ6Ha7fr8fZ59Op4vFgtHYbreXy0Uul/N4vNlsRiRkjUqlgm73+32sj8djrVarVqtoxvV6PZ/P6JPVaqVHLpvNCoXCVqs1HA6LxSKRvJrT6QyHwz8ahUKBoaFQCF8UjXZRMc5zInK5HE729TQQFJYOeCOoOcYMOzYajXCj0ahEImF1B1EHNmEwVNVsNjPxSqVSJBKx0tjtdrgrbCIxjc1mU6/Xo5dwIcBh+ZbIZLJIJMImUv20N/gNE/TqaGmS+lAAAAAASUVORK5CYII=)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
3) Рассмотрим ![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
4) ![](data:image/png;base64,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)
Ответ: 13.
Задача 4. Площадь трапеции
равна 810. Диагонали пересекаются в точке ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAALCAIAAAAmzuBxAAAAkUlEQVR4nGP5//8/A17Agl8aRcWhQ4du3Ljx+vVrXV1dPz8/dBW3bt3q7e3duHHjx48fDQ0NsaiorKyMi4sDMt6/f//hwwcsthw+fHjSpElAxokTJywsLLCoYGVl5eLiAjLmz5/f0tKCRQXQERMmTJCWli4tLTU1NYWYeubMmcLCQqiKiIgINE/aggGJ4YELAADWiDeVepq7DQAAAABJRU5ErkJggg==)
Отрезки, соединяющие середину
основания
с вершинами
и
пересекаются с диагоналями трапеции в точках
и
Найдите площадь треугольника
если одно из оснований трапеции вдвое больше другого.
1 случай.
Рисунок 19
Решение:
1) Рассмотрим четырёхугольник ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAALCAIAAADnSardAAABtElEQVR4nLVRy4vBYRQdj4WUBRtWZOFRkpJSs7SyYMXCW0opWyWykFFKIVGyIOVP8Cqh7DxSFh7JjhQlth4bc/IrZsxMs/rdxdf57v3uueeej3673d7ICTpJvN+oG42G3W6PRqPL5TKdTiPT7/cHgwGbzS4UCl6v93K5ZLNZn883HA7dbrdMJjufzwaDQSKRCIXCzWYTj8d/p2YymVqt1maziUQiUI9Go1wuVy6XUVKr1VQqtdvtomo2m1UqlcPh6PV6DAbjcDgEg0EajYYBf1I3m0347nK5UqkUrmgoFotECW04w+FwIBAA4PF4s9kM4Hg8brdbrDsej/P5PPF4sVhAUCwWe1K3Wq16vT6dTjOZjNVqXa/XfD7/q4rJZCKXywmgUCgAOp2OyWRy3uPxTCqVgveper/fX69XLpeLxeEvMhwOB1ZiZeDVanU6ncRiMYVCwTWRSEQiEUKN0Wj85xvxP2CpVqvtdrtUKiGTTCb9fr9SqWSxWDqdLhQKwa5arTafzz0ej0ajwbxKpWKxWF4YXw35uAeAXq8nMu/3eDRAKQEwhgACgWC32/0U+2oIGUEi9SeVMcZmXC0YzwAAAABJRU5ErkJggg==)
основания трапеции.
параллелограмм.
2)
по двум сторонам и углу между ними. Аналогично,
Значит, ![](data:image/png;base64,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)
![](data:image/png;base64,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)
3)
диагонали параллелограмма делят его на четыре равных по площади треугольника.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAH4AAAAOCAIAAABmYz8eAAAC7UlEQVR4nGP5//8/wygYCMAy0A4YuWA06OkHvnz5wsPDA+cigr69vZ2fn//u3bs/fvyYOnUq5TZR3UBamElFA48fP15WVnb48GEg+/fv33Pnzt23b5+0tHRfX19kZOTHjx/19fU7Ojrg6hFBDxS9fPmyrKzsoUOHKHEB7QykhZlUNNDIyOjo0aMQ9rt379LT0/38/BwcHNzc3JSUlGJiYrS0tJDVI4K+oKDA29v74MGD9vb2xNsnKSn58uVLCFtbWxvoDQoNpIWZ9DGQnZ0drkBcXPzZs2dFRUWTJk1SVla+evUqMA4KCwsrKyvhahBB39jY+Pbt26ioqB07dhDviOfPn+OSIs9AWphJTwPhQFRUFJjei4uLgeFeUlJibW3t6emJJeiXLVsGtL6pqUlFRYV4FzDgTlBkG0gLM+lmIDJgZWUNDAwEGg7hSklJKSgoICuABv3y5ct//fp1/fr1/v5+IPf27dszZ848depUd3c3MDkAY+zDhw+ampqrVq0KCAhgYmIC1hgQjbjiH83AkydPQsx58uQJkO3i4nL69OnY2FhMA4k3E1ieVldXoxm1cOFCGRkZiPtJNRDua2C5D0yqpBp45MgRIHn27FljY+Pz58+vWLECWNQsWLCgpqYGGFWfP38GWgdUAKyHz5w5Ayx8oEG/efNmZFOA0SgmJmZqahoaGgp0ioSEBFDw2LFjcnJyr169cnd3x+oTZIBmINycvXv3qqurA6ud3NxcYC1EvIGYZgK9FxcXh2aUmZkZMCETYxqmgXBfA9nABgmpBtrY2Pz79w/CNgQDCBtYyiMrswUDBlzt+t27d/v4+Jw7d87X1xdYBQGTpJqa2s2bNyMiIiBRRyqAm7N06dKkpCQgCUxNlBgIBJhGTZ8+/c+fP+SZxoDka2AIUsVA/AB70AOtBJLAqh9ZMDExEUimpKSQYQ28yTxv3jwGcAKBS5FnIFajgLUZeUZBALKvIZ6l0ED8YLQ3O2BgNOgHDAAAic8kgkRhkEkAAAAASUVORK5CYII=)
4) Т. к.
то
средняя линия треугольника ![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAAAXCAIAAAATLl8uAAADnUlEQVR4nO1XWyh0URSenwlTLk9ymUaSSxEzgyhGvMgtRRImKdG8eHDJNS9MyuXBUMjlTeKFB5dEUa6JeJLcc4lcSrnmUvi/zv47/5lxnM75m+PS73vY7b3P3mutb+2119pH+vr6KvmfIP1sAz4aP4TNioWFhdLS0tnZWVG1CIK4hAMDA+fn50VVIRTiEra2thZV/j/g5w5/N9zd3Y2MjKhUKh8fH45lt7e3tra2Eibh2tpaBweH3d3dh4eH1tZWs1gzNzeHdmVlJSgoyOTT0dFRTU3N5ORkQUFBXl5ec3Pz1NSUVCo9OTlpa2sbHh5GPz4+3t/fn0P+9fV1VlZWV1eXo6MjhkwhRDVeGRkZGVdXV0qlsq6uzogwxqurqwqFYmZmxixsAY1G8/Lywvrp9PS0vb19fX09LCwMhNPS0vLz83FcTU1NSOz19fWwtaSkZGxsjEN+UVGRWq0GycTERBsbG6YQsgDbPTw8MjMzfX19ycxfwvB0QkLC9PR0ZGSkIFYuLi5nZ2ek7+fnB6/x2RUcHIzWwsIiIiICHWdnZ7Sjo6OxsbGNjY3u7u4gvLi4yK1lYmKiu7sbXgPVwcFBphCy0tPTc21tLSoqqrCwsKKiwohwdXX1xcWFVqvldupbIH54rgQBRHJKSgo909PT09nZSQ+XlpZSU1N/UcDQ0tKSW8vl5SVO2NvbG0dtIoT0vby8iouLw8PD4+LijAj39vaCql6vh0t4Wk+D1ffEYhM8Pz/DPno4Pj6ek5ODY8FVtLe3v7+/t7KywnxoaOjBwQFOOCQkhFsLFmxtbeEaurm5kU+0ECZcXV0RMqT/h3BfX9/T0xNiw2AwCCXM6vv3/kloa+DilpYWJyenm5sbdEAYkRUdHY1PSGZIvJBA0gyHloaGhv7+frlcjnRFZmghQHp6up2dHRI4VICgEWFkRaagvb09GFFVVaXT6RASQ0NDSUlJuG8QhzDb3t7u6Ojg7RB2aCkwZ5KTk0lHTYGPEBUFViFAZWUl6g59+ATsdRgpFGGwvLwcEBDw+PiIPefn5zExMUgAJlZyg9SD/f19/lvMCFxPmUxmMslCGIVkY2MDr0KQROhvbm4iNhASx8fHh4eHglTCZUK3mBFv2UpYCSN0s7OzTSZzc3PRlpeX89eH8oj0I8TCj4BYT8udnR3kIfKa+1IQi/DAwACpexKqovCv1WJDLMJlFCTUBfk6bCUf8Lf03lv6s/Dtfw+F4jf/KqH28rG8RQAAAABJRU5ErkJggg==)
5)
трапеция, ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGsAAAAXCAIAAACDPSbhAAADDklEQVR4nO2XMUg6URzHTcIoJIcgMjAMRJCgJJEGkxqCBhNyUKRNCJdADMQ/buZimw5GBdLQoFC5VIPQkmaJkg4lSpQgLVEQ5FRG5P+HT86Hnpp3J3/+XN/h8bx79/1938e7e+96y+Uy51c01PuvA/z3+iVIV2wkGI/H7Xb7xcUFI25sJDg9PX15ecmUGxsJ9vX1MejGRoLM6pcgXdUIut1ugUCQz+c/Pj62trYYcafp2Y1IoFgsBm0qlVIoFPRr1Qhubm7e3t6KRKJoNMpUVpqe3YgEmp2d/f7+ZqpWjaDVatVoNJFIZG5urtNMQqHw+fkZ9ScmJiAKHc+lpaXT09MuRWomyrVqBDc2Nl5fX1dWVsLhcKdxn56eSI9T80T4uhSpmSjXqhIMBAJwscvlkkgkHV2PRPqH0/TsRiRQT09P3chyuUynVpVgMBj8/PzM5XIej4dCXNI/nLKnWq2Gd3k3InEqvBiJCp8019fX6+vrVYInJyf46fv7+93d3WQyubOzc35+LpfLDw8PLRaLz+dzOp1ms3lvb6+/v791jTrPbDZLWBmNRnhYVCrV29ubTCY7ODhYXl7mcrlTU1Mw0uv1Dg0N1V1e54CHsdlsx8fHuEOnajZ9WFUSiQSKmslkeDweqg6g1RVxmu0H4Z4fHh5WKpU6nW5/f//r6wsiGgyG0dFRAD85OdkWX6Nwq1AoBPlGRkbg+NXV1djY2MvLy+LiIhoJTAcGBlo74GFKpVKdQ1sVi0VgXSgUWk8f+nq9HkVdW1sjquO3KjnBs7MzWBDT6fTCwsL7+zusUHCb3NzcwPcQBB0fH/9hUFyE1dHRkd/vhw7MQSqV3t3dwS0JzxExkhQf7oCHEYvFjQ5tBegfHx+bnSWmD32tVoui4vnxweQEt7e3oYXVHf2cn5+HFt9/UhDapiIrfMtqMpmgXV1d7cihMcxPHJDgVTAzM9NiAD59IipeHRfrvuoeHh4GBwf5fD5ThqwjCK9gh8OB+rDj6XTb2CjWEfxTEXRg4aaPj8NCgoQaP42pib0EmdJfCyUVjjisE/UAAAAASUVORK5CYII=)
Пусть
тогда
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
![](data:image/png;base64,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)
Ответ: 22,5.
2 случай.
Рисунок 20
Решение:
Пусть
высота трапеции.
Положим
Тогда ![](data:image/png;base64,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)
Треугольник
подобен треугольнику
с коэффициентом
а треугольник
подобен треугольнику
с коэффициентом
Тогда
Значит,
Аналогично, ![](data:image/png;base64,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)
Следовательно,
Ответ: 14,4.
Литература:
1. Геометрия. 10 – 11 классы: учеб. для общеобразоват. учреждений: базовый и профил. уровни / [Л.С. Атанасян, В.Ф. Бутузов, С.Б. Кадомцев и др.]. – 22-е изд. – М.: Просвещение, 2013. – 255с.
2. Геометрия в таблицах. 7 – 11 кл.: Справочное пособие / Авт.-сост. Л.И. Звавич, А.Р. Рязановский. – 4-е изд., стереотип. – М.: Дрофа, 2000. – 128 с.
3. http://www.fipi.ru (Официальный сайт Федерального института педагогических измерений)