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three circle touching each other
Author:
Huang
three circle touching each other
GeoGebra
New Resources
三位數除以一位數（二）
拼砌四邊形
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
球體建築師
Discover Resources
conjugate
銳角、直角和鈍角
黃金矩形
選擇合適的「單位」
勾股定理（几何原本）的副本
Discover Topics
Geometric Mean
Triangles
Cube
Definite Integral
Vectors 3D (Three-Dimensional)