Angle Relationships
10th Grade•55 minutes•G 501 (Use several angle properties to find an unknown angle measure)
Learning Objective
I can use angle relationships to find missing angle measures.
Key Concepts
When two parallel lines are cut by a transversal, there are relationships between the angles formed, such as alternate interior angles and corresponding angles.
Supplementary angles form a straight line and their measures add up to 180 degrees.
Alternate interior angles are congruent, meaning they have the same measure.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
View questions preview
1. What are vertical angles?
2. In the image below, lines AB and CD are parallel and cut by transversal EF. If angle ∠EFB is 50°, what is the measure of angle ∠DFH?
3. What are corresponding angles?
...and 9 more questions
Educational Video
How to Find Missing Angles Using Angle Relationships
Professor Kat