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任意三角形兩不等圓v3
Author:
Lin Ching Chieh
GeoGebra
New Resources
拼砌四邊形
柱體建築師
判斷球體
兩位數除以一位數（二）
兩組對邊相等的四邊形
Discover Resources
Copy of 固定周界的長方形的面積變化
Copy of 固定周界的長方形的面積變化
題三
congruent triangle2_provided by Mr Yeung Kar Chun
错觉多边形
Discover Topics
Geometric Distribution
Fractal Geometry
Dilation
Polygons
Curve Sketching