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折正三角形
Author:
cherry910502
GeoGebra
New Resources
算柱 (兩位數)
拼砌四邊形
三位數除以一位數（一）
近似值：有效數字
兩位數除以一位數（二）
Discover Resources
正方形的旋轉2
題1
Properties of a Rhombus
Distributive Law of Multiplication 1 (乘法的分配率 1)
包路線
Discover Topics
Symmetry
Translation
Line Segment
Exponent
Vectors 3D (Three-Dimensional)