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Direct and Inverse Variation 正變與反變
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
平行線的斜率
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
垂直線的斜率
Discover Resources
proof AAS
垂直3
Dynamic HSV Color Platte
拋物線五-包絡線法
平面截圆柱体
Discover Topics
Tree Diagrams
Surface
Natural Numbers
Parametric Curves
Circumcircle or Circumscribed Circle