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餘弦定理
Author:
yuchengda
GeoGebra
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GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
小数 的副本
兩組對邊相等和有直角的四邊形
四邊形的特性
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拋物線
動態文字多項式函數
分段函數
認識對稱圖形
圆在折线上滚动
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Polygons
Perimeter
Distributions
Normal Distribution
Similar Triangles