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同位角__水平平行綫
Author:
chanfushun
GeoGebra
New Resources
球體建築師
【案例】2018年全国1卷理科12题
找出對稱軸
判斷球體
兩位數除以一位數（一）
Discover Resources
等周長的扇形與矩形
GeoGebra繪本製作
Net of pyramid
腾讯网
抛物面
Discover Topics
Hyperbola
Line Segment
Standard Deviation
Congruence
Planes