Two distinctive lines intersecting each various other at 90° or a best angle are referred to as perpendicular lines.

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


The two lines space parallel and also do not intersect every other. They have the right to never it is in perpendicular to each other.The two lines are intersecting each other at an acute angle. So, they room not perpendicular.The lines are not intersecting each other at ideal angles.

Properties the perpendicular lines

These lines always intersect at right angles.

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


Adjacent political parties of a square and also a rectangle are always perpendicular to each other.

Sides the the right-angled triangle enclosing the ideal angle space perpendicular to each other.

Real life examples

We have the right to observe many perpendicular lines in genuine life. Some instances are corner of 2 walls and the Red cross symbol.


Fun Facts

The native ‘perpendicular’ has actually its beginning from the late middle English i beg your pardon exactly method “at ideal angles”, from Latin ‘perpendicularis’, ‘perpendiculum’ definition “plumb line” and also from ‘perpendere’ where ‘per’ way “through” and ‘pendere’ method “to hang”.

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The perpendicular currently are always intersecting lines yet intersecting lines are not constantly perpendicular to each other.