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兩圓及交弦
Author:
luke huang
GeoGebra
New Resources
異分母分數減法
算柱 (兩位數)
畫出對稱圖形
三位數除以一位數（一）
兩位數除以一位數（二）
Discover Resources
angles in the same segment
錯角---垂直平行綫
Congruent Triangle (SSS)
函数作图工具的副本
圓周分層工作紙LV3答案