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音乐播放器(需下载到本地使用)
Author:
孟宝兴
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
拼砌四邊形
四邊形的特性
畫出對稱圖形
Discover Resources
三角形的高與面積
試繪
畢氏定理
圖四的副本
例题2（P点可拖动）
Discover Topics
Geometry
Cuboid
Intersection
Similar Triangles
Constructions