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左右平移
Author:
王玉霞
GeoGebra
New Resources
判斷球體
兩組對邊相等和有直角的四邊形
球體建築師
兩位數除以一位數（一）
找出對稱軸
Discover Resources
中點軌跡(動點在兩圓上)
四邊形四個九點圓共點(九點心)
线段的最值
多邊形陣列
多边形的外角和
Discover Topics
Rhombus
Histogram
Linear Functions
Special Points
Ratios