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錯角---垂直平行綫
Author:
chanfushun
GeoGebra
New Resources
GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
画直线等分三角形的面积
畫出對稱圖形
Discover Resources
earth
sierpinski carpet
parallel
雙曲線規的副本
我的第一个绘本
Discover Topics
Cube
Percentages
Parabola
Centroid or Barycenter
Reflection