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楕圆定义
Author:
WLS
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
第八周作业
【案例】2018年全国1卷理科12题
找出對稱軸
Discover Resources
PMC 2016-17
Locus (Non parallel lines)
串珠(兩種顏色)
旋轉長方形
圆锥曲线1
Discover Topics
Addition
Circle
Subtraction
Trigonometry
Limits