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Find your perfect rectangle
Author:
黃懿德
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
画直线等分三角形的面积
球体的体积推导（优化版）
四邉形 (四年級) 教師版
Discover Resources
linear function
劉徽的「割圓術」
折紙畫橢圓
優良作品2(薇如)
鉛筆畫圓
Discover Topics
Differential Equation
Parallelogram
Fractal Geometry
Geometric Distribution
Cosine