7.11c Angle Relationship DAY 7

Front

What is the measure of the unknown angle in a triangle if the other two angles are 30° and 117°?

Back

The measure of the unknown angle is 33°.

Front

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

Front

What is the measure of the unknown angle in a triangle if the other two angles are 65° and 50°?

Back

The measure of the unknown angle is 65°.

Front

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

Back

∠COB & ∠AOD.

Front

Find the value of x if 2x + 10 = 34.

Back

x = 12.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is 180°.

Front

If two angles are complementary, what is the relationship between their measures?

Back

The sum of their measures is 90°.

Front

What is the measure of an angle that is supplementary to a 75° angle?

Back

The measure of the supplementary angle is 105°.

Front

What are adjacent angles?

Back

Angles that share a common side and vertex but do not overlap.

Front

If two angles are vertical angles, what can we say about their measures?

Back

Vertical angles are always equal in measure.