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已知正三角形內部一點到三頂點距離求面積
Author:
連琨銘
GeoGebra
New Resources
Earth with coastline
畫出對稱圖形
近似值：有效數字
Fibonacci Clock
第八周作业
Discover Resources
自我練習
中一︰全等圖形（平移、旋轉、反射）
周界
複合棒形圖2
三角形的高
Discover Topics
Plane Figures or Shapes
Functions
Triangles
Angles
Square