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正三角形繞正方形旋轉
Author:
AlexWang
GeoGebra
New Resources
拼砌四邊形
四邊形的特性
兩組對邊相等和有直角的四邊形
判斷球體
異分母分數減法
Discover Resources
圓環扇形
最小周長
trapezoid2
填色
劉徽的「割圓術」的副本
Discover Topics
Special Points
Equilateral Triangles
Cone
Symmetry
Subtraction