Vocabulary
This angle measures exactly 90 degrees.
What is a right angle?

Angle 2, 3, 6, and 7 are 125 degrees.
Complementary Angles
Two angles whose measures add up to 90

The measure of Angle M is 83 degrees. Angle L is vertical to Angle M, what is the measure of Angle L?
What is 83 degrees.
If angle 1 is 2x and angle 4 is 90 - x, find the value of x.


This type of arc has a measure greater than 180 degrees.
What is a Major Arc?


Angle A and Angle B are Adjacent. If the measure of angle A is 39 degrees, what is the measure of Angle B?
What is 141 degrees?
Supplementary Angles
Two angles whose sum is 180 degrees.

What is the measure of arc AB, if the central angle measures 87 degrees?
What is 87 degrees.
