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Author:
chen mingchuan
GeoGebra
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算柱 (兩位數)
兩組對邊相等和有直角的四邊形
球體建築師
拼砌四邊形
小数 的副本
Discover Resources
平行四邊形與三角形
兩弦的長度比較
竞猜游戏：说出图中角的大小
少数派Pi
滑轮组
Discover Topics
Normal Distribution
Cube
Similar Triangles
Isosceles Triangles
Cone