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正八面體
Author:
黃國斌
GeoGebra
New Resources
找出對稱軸
算柱 (兩位數)
兩位數除以一位數（二）
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
Discover Resources
Symetry
Griffiths Theorem
Geometric Proof of Arithmetic-Geometric Mean Inequality
噴嘴示意圖
構作對稱圖形
Discover Topics
Pythagoras or Pythagorean Theorem
Coordinates
Quadratic Functions
Continuity
Orthocenter