Measuring and Drawing Angles Flashcard

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint, called the vertex.

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 right angle?

Back

A right angle 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 measure an angle?

Back

An angle is measured using a protractor.

Front

What is a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What is the term for angles that add up to 90 degrees?

Back

Complementary angles.

Front

What is the term for angles that add up to 180 degrees?

Back

Supplementary angles.

Front

What is the symbol for degrees?

Back

The symbol for degrees is '°'.