What is the relationship between two perpendicular lines? What are some examples?

1 Answer
Zor Shekhtman
Nov 20, 2015

All four angles formed by two perpendicular lines are measured #90^o#.

Explanation:

By definition, perpendicular lines are those that intersect at right angle.

enter image source here

The definition requires only one angle (out of four formed by two intersecting lines) to be the right angle (that is, measure at #90^o#). Obviously, all others are also measure #90^o# since an angle adjacent to one measured #90^o# must complement it to a straight angle of #180^o# and, hence, must be #90^o# itself.

Example of perpendicular lines:

enter image source here

Related questions
See all questions in Angles Between Intersecting and Parallel Lines
Impact of this question
7774 views around the world
You can reuse this answer
Creative Commons License