Vertical Angles and Linear Pairs

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

Vertical angles are always:

Back

Congruent (equal measures).

Front

What is the sum of the angles in a linear pair?

Back

180°.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

If two angles are supplementary and one angle measures 70°, what is the measure of the other angle?

Back

110°.

Front

What is the relationship between adjacent angles in a linear pair?

Back

They are supplementary.

Front

If ∠AOD and ∠COB are vertical angles, what can be said about their measures?

Back

They are equal.

Front

Find the missing angle if ∠A + ∠B = 180° and ∠A = 160°. What is ∠B?

Back

20°.

Front

Which angles are considered a linear pair?

Back

Two adjacent angles that are supplementary.

Front

If ∠A = 5x and ∠B = 3x + 10, and they are supplementary, what is the value of x?

Back

5.