004(B) #7 TIP chart Flashcardizz Angle Relationships

Front

What are parallel lines?

Back

Lines that never intersect.

Front

What do you call angles that add up to 180º?

Back

Supplementary angles.

Front

What do perpendicular lines create?

Back

90 degree angles.

Front

What is an angle that measures 90º called?

Back

Right Angle.

Front

What is an angle that measures 180º and forms a straight line?

Back

Straight Angle.

Front

What are complementary angles?

Back

Angles that add up to 90º.

Front

What is the definition of vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is the sum of angles on a straight line?

Back

180º.

Front

What is the sum of angles in a triangle?

Back

180º.

Front

What is an acute angle?

Back

An angle that measures less than 90º.