Measuring, Classifying and Naming Angles Quick Check

Front

What is the vertex of an angle?

Back

The vertex is the point where two rays meet to form an angle.

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Back

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

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

Front

How do you determine if an angle is acute or obtuse?

Back

If the angle measures less than 90 degrees, it is acute; if it measures more than 90 degrees and less than 180 degrees, it is obtuse.

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Back

Front

What is the measure of an angle that is 130 degrees?

Back

An angle measuring 130 degrees is classified as obtuse.

Front

What is the measure of an angle that is 75 degrees?

Back

An angle measuring 75 degrees is classified as acute.

Front

What are the properties of angles formed by intersecting lines?

Back

Angles formed by intersecting lines can be classified as vertical angles, adjacent angles, complementary angles, or supplementary angles.