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平行四邊形
Author:
李春培
Topic:
Parallelogram
GeoGebra
New Resources
異分母分數減法
GeoGebra笔记功能体验课件
画直线等分三角形的面积
兩位數除以一位數（一）
畫出對稱圖形
Discover Resources
Circle Properties
三圓相切
GGB報告
翹翹板
单位圆画三角函数图像的副本
Discover Topics
Complex Numbers
Rhombus
Constructions
Median Value
Area