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Perpendicular lines

Author:Ng KC

New Resources

柱體建築師
四邊形的特性
拼砌四邊形
錐體建築師
兩組對邊相等和有直角的四邊形

Discover Resources

直線排列 4
Properties of a Rectangle
ETV 對稱
Graph of Exponential function
三角函数求值（单位圆、比值）

Discover Topics

Line Segment
Cosine
Means
Parametric Curves
General Quadrilateral

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