Measuring Angles

Front

What is an acute angle?

Back

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

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 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

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is a vertex in geometry?

Back

A vertex is a point where two or more lines meet, forming an angle.

Front

How do you measure an angle?

Back

You measure an angle using a protractor.

Front

What is the sum of angles in a triangle?

Back

The sum of angles in a triangle is always 180 degrees.

Front

What is a complementary angle?

Back

Complementary angles are two angles that add up to 90 degrees.

Front

What is a supplementary angle?

Back

Supplementary angles are two angles that add up to 180 degrees.

Front

If one angle measures 30 degrees, what is its complementary angle?

Back

The complementary angle is 60 degrees.