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四則
Author:
周錦鋒
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數加法
近似值：有效數字
三位數除以一位數（二）
算柱 (兩位數)
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商高定理4
Triangle
直角坐標變換：測驗(ALEX CHIK)
Example 2
sin(x) 的函數圖形的副本
Discover Topics
Isosceles Triangles
Variance
Histogram
Triangles
Centroid or Barycenter