Unit 2 Lesson 03 Angle Pairs

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common vertex and a common side, but do not overlap.

Front

What is a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles whose non-common sides form a straight line.

Front

Define complementary angles.

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

Define supplementary angles.

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

Identify a pair of adjacent angles from the following: ∠AOD and ∠AOC, ∠COB and ∠DOA.

Back

∠AOD and ∠AOC are adjacent angles.

Front

If ∠8 and ∠5 are vertical angles, what can be said about their measures?

Back

The measures of vertical angles are equal.

Front

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

Back

The sum of the measures of a linear pair of angles is 180 degrees.

Front

If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?

Back

The other angle measures 60 degrees.

Front

If two angles are supplementary and one angle measures 110 degrees, what is the measure of the other angle?

Back

The other angle measures 70 degrees.