Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

complementary angles

two angles that add up to 90 degrees

supplementary angles

Two angles that add up to 180 degrees

adjacent angles

Angles that have a common side and a common vertex (corner point).

vertical angles

A pair of opposite congruent angles formed by intersecting lines.

congruent angles

Angles that have the same measure

corresponding angles

A pair of angles which are on the same side of the transversal, one must be interior, one must be exterior, and they must be nonadjacent

alternate interior angles

angles between 2 lines and on opposite sides of a transversal

alternate exterior angles

Angles that lay outside the parallel lines and are on opposite sides of the transversal; They are congruent.


A line that intersects two or more lines.

parallel lines

lines that never intersect

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording