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角的認識
Author:
whtong
GeoGebra
New Resources
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
算柱 (兩位數)
【案例】2013年安徽高考15题
找出對稱軸
Discover Resources
Introduction of pH
Copy of 線性組合2 三角形
相似双子模型（任意三角形）
拼出三角形的副本
分数加法 Fraction Addition
Discover Topics
Scalene Triangles
Matrices
Planes
Hypergeometric Distribution
Pythagoras or Pythagorean Theorem