124k views
3 votes
Line AB is parallel to line CD what is the measure of 4

Line AB is parallel to line CD what is the measure of 4-example-1
User Aurast
by
5.8k points

1 Answer

7 votes
This question regards supplementary angles. The Same Side interior angle theorem states that in this case, 80˚ and angle 4 are supplementary, or equal 180˚ when added together.


User NEWAZA
by
7.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.