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No.17
Author:
Billy Cheung
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
sanjiaohanshu
三位數除以一位數（一）
直角坐標平面上的旋轉變換
畫出對稱圖形
Discover Resources
waaachen
專題
P4構作對稱圖形
河內塔 (Tower of Hanoi)的副本
乘法训练
Discover Topics
Logarithmic Functions
Distributions
Geometric Transformations
Equilateral Triangles
Arithmetic