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圆的面积展开的副本
Author:
tang
,
qianqianhouhou
拖动n分圆,拖动展开展开圆,拖动拼图拼成长方形。
GeoGebra
通过上面操作请推导圆的面积公式。
New Resources
拼砌四邊形
畫出對稱圖形
四邊形的特性
找出對稱軸
兩組對邊相等的四邊形
Discover Resources
亂數取值 by java
科博館的水畢氏三角
Locus (Parallel lines)
圓柱切割
dragon(龙)
Discover Topics
Trigonometry
Binomial Distribution
Statistical Characteristics
Right Triangles
Equilateral Triangles