如何证明焦点弦与椭圆内切圆相切时三角形面积最大（见补充）？ 知乎 Sketch Coloring Page

如何证明焦点弦与椭圆内切圆相切时三角形面积最大（见补充）？ 知乎 Template

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sketch #1169 ENJOY IT!!!!!!!! OH NO EAT IT OR IT WILL MELT!!!!! :0

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sketch #3222 Late happy valentine&#;s from Tiffa Hidalgo Jordan Coquet

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tomski如何证明焦点弦与椭圆内切圆相切时三角形面积最大（见补充）？ 知乎 coloring

如何证明焦点弦与椭圆内切圆相切时三角形面积最大（见补充）？ 知乎 sketch template

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