Measuring Angles

Front

What is an angle?

Back

An angle is formed when two lines meet at a point, called a vertex.

Front

What is a protractor used for?

Back

A protractor is a tool used to measure angles.

Front

What is the measurement of a right angle?

Back

90 degrees.

Front

What type of angle measures less than 90 degrees?

Back

An acute angle.

Front

What type of angle measures exactly 180 degrees?

Back

A straight angle.

Front

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

Back

An obtuse angle.

Front

What do we call the point where two lines meet?

Back

A vertex.

Front

What is the total measurement of angles in a triangle?

Back

180 degrees.

Front

If one angle in a triangle is 90 degrees, what type of triangle is it?

Back

A right triangle.

Front

What is the term for angles that are equal in measurement?

Back

Congruent angles.