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劉虹圻 垂心
Author:
呂麗珠
Topic:
Orthocenter
GeoGebra
New Resources
Fibonacci Clock
畫出對稱圖形
拼砌四邊形
算柱 (兩位數)
找出對稱軸
Discover Resources
電子幾何條
螢橋國中 陳柏丞
輪子轉動問題_求直徑和半徑
农大
六上：圆的面积公式推导
Discover Topics
Division
Quadratic Functions
Cylinder
Numbers
Random Variables