Angle Relationships & Triangles

Front

What is the measurement of a right angle?

Back

90 degrees

Front

What angle corresponds to side AB in triangle ABC?

Back

ACB

Front

What is the measurement of a straight angle?

Back

180 degrees

Front

How can you determine the measurement of an angle in a triangle?

Back

Use the triangle sum theorem (the sum of angles in a triangle is 180 degrees).

Front

What does 'triangle' mean?

Back

A polygon with 3 angles.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

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

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.