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Proof35 高士哲
Author:
郭亮偉
GeoGebra
New Resources
判斷球體
算柱 (兩位數)
球體建築師
兩組對邊相等和有直角的四邊形
柱體建築師
Discover Resources
Polygon Activity
Primary Mathematics
三角形面積
兩圓動點中點軌跡
Tangent of circle