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椭圆内切圆链
Author:
孟宝兴
GeoGebra
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判斷球體
兩組對邊相等的四邊形
畫出對稱圖形
【案例】2013年安徽高考15题
柱體建築師
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圓形與相似形
quadrilaterals 3
assigment7
構作對稱圖形
圖二 的複本
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Cuboid
Trigonometry
Ratios
Histogram
Planes