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What does perpendicular mean in math?

User Myesha
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The term "perpendicular" means that two objects make an angle of 90° between them.

For example, if two segments are perpendicular, the angles created in the intersection point are equal to 90°:

If we have two linear equations y = m1x + b1 and y = m2x + b2 and these lines are perpendiculars, the slopes m1 and m2 have the following relation:


m_1=-(1)/(m_2)

In the same way, if a line is perpendicular to a plane, the intersection point has an angle of 90°:

What does perpendicular mean in math?-example-1
What does perpendicular mean in math?-example-2
User Clemahieu
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