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1988全国理4
Author:
常振虎
GeoGebra
New Resources
畫出對稱圖形
拼砌四邊形
直角坐標平面上的旋轉變換
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
Discover Resources
Area of cirle
圆锥侧面展开图
三角形的心
学用数学
三角形全等的直观图(可重合).许兴华数学
Discover Topics
Division
Power Functions
Numbers
Coordinates
Vectors 3D (Three-Dimensional)