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練習 - 逆時針旋轉（三角形）
Author:
Lau Sir
Topic:
Triangles
GeoGebra
New Resources
找出對稱軸
錐體建築師
畫出對稱圖形
三位數除以一位數（一）
兩位數除以一位數（一）
Discover Resources
afdsfsdfds
函數圖形
長方形面積法 _單項式乘法
圖形2
圓錐曲線Conic Section
Discover Topics
Intersection
Geometric Mean
Line Segment
Boxplot
Integers