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請做出一正三角形
Author:
yen
請做出一正三角形
GeoGebra
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異分母分數減法
画直线等分三角形的面积
兩組對邊相等的四邊形
兩位數除以一位數（二）
直角坐標平面上的旋轉變換
Discover Resources
商高定理2
Quiz on Addition and Subtraction of Directed Numbers (1) 有向數加減測驗(1)
等分例子
百葉窗2
以多維度解釋標準差
Discover Topics
Special Points
Interest Calculation
Reflection
Plane Figures or Shapes
Tangent Line or Tangent