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正12面體
Author:
GEOGEBRA啟
GeoGebra
New Resources
球體建築師
找出對稱軸
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
Discover Resources
垂心即內心
有趣的反例
test01
鏡面反射光線
雙橢
Discover Topics
Real Numbers
Logarithmic Functions
Right Triangles
Exponential Functions
Root