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正弦定理
Author:
yuchengda
GeoGebra
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兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數(二)
兩位數除以一位數(二)
錐體建築師
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線之極點定理 / pole of a line theorem
Viviani's curve
製作對稱圖_教師示範
用GGB制作奔驰轮胎.许兴华数学
动点最值问题&抛物线模型
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Scalene Triangles
Triangles
Means
Parametric Curves
Geometry