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同心圓內的直線2
Author:
陳佳震
GeoGebra
New Resources
兩位數加法
三位數除以一位數（二）
拼砌四邊形
畫出對稱圖形
柱體建築師
Discover Resources
圓周
test
勾股定理（几何原本）的副本
面积平分线
K1+k2
Discover Topics
LCM and GCD
Unit Circle
Area
Geometric Distribution
Right Triangles