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正n星角
Author:
李春培
正n星角
GeoGebra
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四邉形 (四年級) 教師版
兩組對邊相等的四邊形
找出對稱軸
四邊形的特性
三位數除以一位數（一）
Discover Resources
龍騰4_1-1習9
test
傅立葉
sin(x) 的函數圖形的副本
任意凸多边形的滚动
Discover Topics
Incircle or Inscribed Circle
Pie Chart or Circle Chart
Binomial Distribution
Right Triangles
Parametric Curves