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直角三角形斜邊上的高小於斜邊的一半
Author:
chihchengliang
GeoGebra
New Resources
四邉形 (四年級) 教師版
第八周作业
畫出對稱圖形
球體建築師
球体的体积推导（优化版）
Discover Resources
立體圖形的反射對稱
優良作品3(祥恩)
MFS: Rebound 4
effect of changing data by Mr LO WY
Copy of 劉徽的「割圓術」
Discover Topics
Hyperbola
Median Value
Cuboid
Cone
LCM and GCD