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繪製平行四邊形
Author:
曾耀輝
GeoGebra
New Resources
異分母分數減法
畫出對稱圖形
画直线等分三角形的面积
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
Discover Resources
Conductivity
工具箱
練習
多項式函數
對數的平移效果
Discover Topics
Rectangle
LCM and GCD
Pythagoras or Pythagorean Theorem
Random Variables
Vectors 2D (Two-Dimensional)