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proof30黃煒皓
Author:
郭亮偉
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
兩位數除以一位數（二）
判斷球體
兩組對邊相等和有直角的四邊形
Discover Resources
少一塊
雙曲線漸近線
正方形和長方形有甚麼特性？
No.3
線對稱圖形
Discover Topics
Rotation
Plane Figures or Shapes
Sequences and Series
Division
Trapezoid