Week 15 HW

Front

What are vertical angles?

Back

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

Front

What is the measure of supplementary angles?

Back

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

Front

What is the measure of complementary angles?

Back

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

Front

What type of angle measures 90 degrees?

Back

A right angle measures 90 degrees.

Front

What type of angle measures less than 90 degrees?

Back

An acute angle measures less than 90 degrees.

Front

What type of angle measures more than 90 degrees but less than 180 degrees?

Back

An obtuse angle measures more than 90 degrees but less than 180 degrees.

Front

If two angles are complementary, and one angle measures 28 degrees, what is the measure of the other angle?

Back

The other angle measures 62 degrees (90 - 28 = 62).

Front

If two angles are supplementary, and one angle measures 118 degrees, what is the measure of the other angle?

Back

The other angle measures 62 degrees (180 - 118 = 62).

Front

What is the relationship between adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

If ∠1 and ∠3 are vertical angles, what can be said about their measures?

Back

The measures of ∠1 and ∠3 are equal.