Find the value of each indicated angle in the following figures. Do not use a protractor. Use the properties of straight and vertical angles to help you.
These angles are supplementary.
and b are vertical angles. What does that tell you about the measure of angle ?
Set up an equation relating
and . .
Subtract 133° from both sides.
are vertical angles, and f and are supplementary. . Refer to part (c) for the steps to solving this problem.