Name:___________________
Date:____________
Class:___________________
Determining Angle Measure with Parallel Lines Worksheet
Answer the following questions.
1. Explain why ∠ 4 and ∠ 6 must be supplementary.
2. If you know that m ∠ 1 = 70, explain two different strategies you
could use to find m ∠ 5.
3. Explain what the arrowheads on the lines in both diagrams at the right indicate.
4. If BD || AT , then ∠ 1 ≅ ∠ 3 and ∠ 6 ≅ ∠ 4. Explain why this is true. (see figure
above)
5. If WP || KR , then ∠ 1 ≅ ∠ 2. Explain why this is true. (see figure above)
List the conclusions that can be drawn from each figure.
6.
8.
7.
Johnny Wolfe Determining Angle Measure with Parallel Lines
Jay High School
Santa Rosa
County Florida
September 14, 2001