Two distinct lines intersecting each other at 90° or a right angle are dubbed perpendicular lines.

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Here, ab is perpendicular come XY because abdominal and XY intersect each various other at 90°.


The 2 lines are parallel and do no intersect every other. They can never be perpendicular to every other.The two lines are intersecting each various other at one acute angle. So, they space not perpendicular.The lines room not intersecting each various other at appropriate angles.

Properties the perpendicular lines

These lines always intersect at appropriate angles.

If 2 lines space perpendicular to the very same line, they room parallel to each other and will never intersect.


Adjacent sides of a square and a rectangle are constantly perpendicular to each other.

Sides of the right-angled triangle enclosing the best angle room perpendicular to every other.

Real life examples

We can observe many perpendicular lines in actual life. Some examples are corner of 2 walls and the Red overcome symbol.


Fun Facts

The word ‘perpendicular’ has its beginning from the late center English which exactly means “at ideal angles”, native Latin ‘perpendicularis’, ‘perpendiculum’ meaning “plumb line” and also from ‘perpendere’ where ‘per’ way “through” and also ‘pendere’ means “to hang”.

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The perpendicular present are constantly intersecting lines however intersecting lines space not constantly perpendicular to every other.