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congruent (SA) 2
Author:
Ricky Chan
GeoGebra
New Resources
球體建築師
判斷球體
画直线等分三角形的面积
異分母分數減法
三位數除以一位數（一）
Discover Resources
梯形的面積
Rotation（旋轉）
Rotation
Linear Programming
摺正三角形
Discover Topics
Cosine
Trigonometry
Hyperbola
Statistical Characteristics
Integers