Angle Sum

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on different parallel lines cut by a transversal. They are equal in measure.

Front

What is a right angle?

Back

A right angle is an angle whose measure is exactly 90 degrees.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of the transversal and inside the two lines. They are equal when the lines are parallel.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

How do you find the measure of a missing angle in a triangle?

Back

To find the measure of a missing angle in a triangle, subtract the sum of the known angles from 180 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect. They are always equal in measure.

Front

If two angles are complementary, what is their sum?

Back

If two angles are complementary, their sum is 90 degrees.

Front

If two angles are supplementary, what is their sum?

Back

If two angles are supplementary, their sum is 180 degrees.