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沈暐珊 橢圓反射
Author:
fu0 fu6
GeoGebra
New Resources
畫出對稱圖形
Earth with coastline
長方體平面投影 (Codex版)
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
Discover Resources
弦中點的軌跡
錐體建築師
角平分線性質
固定周界長方形的面積變化（三）
基础知识
Discover Topics
Isosceles Triangles
Numbers
Multiplication
Ellipse
Standard Deviation