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圆在多边形上滚动
Author:
GeoGebra Institute of WuXi
GeoGebra
New Resources
Nested spiral octagon
找出對稱軸
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
美國國旗 (Codex 版)
Discover Resources
方格紙上畫平行四邊形2
認識正方形
繪製平行四邊形
八個方向
廣義三角：sin, cos
Discover Topics
Logic
Geometry
Vectors 2D (Two-Dimensional)
Rhombus
Difference and Slope