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Direct Variation
Author:
Louis Lam
GeoGebra
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兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
球體建築師
異分母分數減法
四邊形的特性
Discover Resources
判斷柱體 9
展開基本
MFS: Rebound 1
正弦线与直线
繡曲線04
Discover Topics
Triangles
Isosceles Triangles
Reflection
Circumcircle or Circumscribed Circle
General Quadrilateral