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congruent triangle_provided by Mr Yeung Kar Chun
Author:
kidmancmw
GeoGebra
New Resources
直角坐標平面上的旋轉變換
三位數除以一位數（二）
四邉形 (四年級) 教師版
算柱 (兩位數)
【案例】2018年全国1卷理科12题
Discover Resources
代數運算：外心座標
圓&五邊形
正方形
四點距離最小
畢氏定理 (勾股定理) <Pythagorean theorem>
Discover Topics
Integers
Right Triangles
Bar Chart or Bar Graph
Linear Equations
Ellipse