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congruent (SSA,RHS)
Author:
Ricky Chan
GeoGebra
New Resources
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
球體建築師
兩位數加法
球体的体积推导（优化版）
Discover Resources
HKCEE-AM 2010 Q17 part a+b
S3 Percentages
二面角的副本
圆锥曲线的统一画法.许兴华数学
Protractor-usage
Discover Topics
Cube
Centroid or Barycenter
Percentages
Equilateral Triangles
Ratios