Angle Relationships

Front

What are supplementary angles?

Back

Angles that add up to 180°

Front

What type of angle is 90 degrees?

Back

Right angle

Front

What are complementary angles?

Back

Two angles with a sum of 90 degrees

Front

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

Back

Obtuse angle

Front

What type of angle is less than 90 degrees?

Back

Acute angle

Front

What is the sum of angles in a triangle?

Back

180 degrees

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect and are equal to each other.

Front

If two angles are supplementary and one angle is 70 degrees, what is the other angle?

Back

110 degrees

Front

If one angle is 45 degrees, what is its complement?

Back

45 degrees

Front

What is the measure of a straight angle?

Back

180 degrees