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教學－與直線有關的角
Author:
Lau Sir
GeoGebra
New Resources
異分母分數減法
拼砌四邊形
判斷球體
找出對稱軸
兩位數除以一位數（二）
Discover Resources
利用頂點描述二次函數
GGB研習繪本
Add Constant in Junior statistic
弦心距
赵爽弦图
Discover Topics
Sine
Root
Triangles
Histogram
Combinatorics