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congruent (SSS) 2
Author:
Ricky Chan
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
找出對稱軸
直角坐標平面上的旋轉變換
異分母分數減法
Discover Resources
以剪貼比較圖形大小 題2
和差角公式几何证明
example 1_sun
凸型表面積計算（平移部分面、角度轉換法）
正立方體變菱形12面體
Discover Topics
Difference and Slope
Diagrams
Isosceles Triangles
Quadratic Functions
Scalene Triangles