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三角形的垂心
Author:
大園數學
垂心是三個高的交點
GeoGebra
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算柱 (兩位數)
異分母分數減法
兩位數除以一位數（二）
畫出對稱圖形
三位數除以一位數（一）
Discover Resources
Linear Programming 線性規劃
給柱體一個名字 1
放射狀圖形
If指令的應用1
matrix of rotation transformation
Discover Topics
Pyramid
Differential Equation
Linear Functions
Complex Numbers
Pythagoras or Pythagorean Theorem