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geo123
Author:
hsu hung yang
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GeoGebra
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四邊形的特性
球体的体积推导（优化版）
判斷球體
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
Rotational Symmetry
公因數與公倍數
Trapezium fixed height
排列組合
Chapter 11
folding paper by Mr LO WY
Discover Topics
Cylinder
Reflection
Plane Figures or Shapes
Straight Lines
Equilateral Triangles