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平移旋轉
Author:
chen mingchuan
GeoGebra
New Resources
錐體建築師
四邊形的特性
異分母分數減法
三位數除以一位數（二）
畫出對稱圖形
Discover Resources
ikik
vertex
homework
正弦函数图像的形成过程.许兴华数学
模拟时钟
Discover Topics
Rotation
Curve Sketching
Constructions
Hyperbola
Exponent