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angle between lines
Author:
johnmayhk
GeoGebra
New Resources
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
兩位數加法
異分母分數減法
錐體建築師
Discover Resources
angle
Simulation of the uniform variable linear motion with GeoGebra
大小相同串珠
congruent triangles_provided by Mr Yeung Kar Chun
洋葱新手任务打卡
Discover Topics
Numbers
Linear Regression
Root
Rectangle
Right Triangles