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rainbow
Author:
李春培
rainbow
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
兩位數除以一位數（一）
sanjiaohanshu
算柱 (兩位數)
Discover Resources
线段的最值
四面體 ABCD, AB 與 CD 距離
平行線法
運用量角器量度以下角度
美图欣赏-线绳艺术
Discover Topics
Piecewise Functions
Prism
Standard Deviation
Cuboid
Square