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Clockwise Rotation (3,-4)
Author:
amn
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
画直线等分三角形的面积
三位數除以一位數（二）
第八周作业
Discover Resources
兩個點波源產生的波紋
正n邊形內角與外角
Tusi Couple
Copy of 分數與小數
带电粒子在匀强磁场中的运动
Discover Topics
Area
Geometric Transformations
Secant Line or Secant
Multiplication
Correlation