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切割正四面體
Author:
薛鈞聰
GeoGebra
New Resources
平行線的判定
椭圆内切圆链
正方形雪花图案
撒针估算面积实验
常见四边形是否是双心四边形
Discover Resources
正多面體
利用按扭製作控制動畫的開關
trigonometry
vit3301
畫圓
Discover Topics
Mode
Orthocenter
Cube
LCM and GCD
Integers