Angle Relationships

Front

If angle ∠ABD is 67°. What is ∠DBC?

Back

23°

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

Name the angle relationship: ∠A and ∠B are opposite angles formed by two intersecting lines.

Back

Vertical Angles

Front

Which are pairs of vertical angles? ∠COB & ∠COA, ∠AOD & ∠AOC, ∠COB & ∠AOD, ∠BOD & ∠AOD

Back

∠COB & ∠AOD

Front

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

Front

What is the sum of angles on a straight line?

Back

180°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

If ∠X and ∠Y are complementary, and ∠X = 30°, what is ∠Y?

Back

60°.

Front

Identify the angle relationship: ∠1 and ∠2 are in the same position on parallel lines cut by a transversal.

Back

Corresponding Angles.

Front

What is the relationship between alternate interior angles when two parallel lines are cut by a transversal?

Back

They are equal.