Find the value of each variable in the following figures. Do not use a protractor. Use the properties of angles to help you.
. Solve for .
These angles are supplementary.
and are vertical angles. What does that tell you about the measure of angle ?
Set up an equation relating
and . .
from both sides.
and are complementary angles, meaning their sum is . and are vertical angles, and and are supplementary. , . Refer to part (d) for the steps to solving this problem.
. Now solve for the value of .