Angle Relationships

Front

What type of angle is less than 90 degrees?

Back

Acute angle

Front

What type of angle is exactly 90 degrees?

Back

Right angle

Front

What type of angle is greater than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What type of angle is exactly 180 degrees?

Back

Straight angle

Front

What are two angles that add up to 90 degrees called?

Back

Complementary angles

Front

What are two angles that add up to 180 degrees called?

Back

Supplementary angles

Front

What do you call angles that are opposite each other when two lines intersect?

Back

Vertical angles

Front

What is the term for a line that intersects two or more lines?

Back

Transversal

Front

If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?

Back

60 degrees

Front

If two angles are supplementary and one angle measures 120 degrees, what is the measure of the other angle?

Back

60 degrees