Angle Relationships

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines cut by a transversal.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are equal.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

How do you find the missing angle when given two angles?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What are alternate exterior angles?

Back

Angles that are on opposite sides of a transversal and outside the two lines.

Front

If two parallel lines are cut by a transversal, what can be said about the alternate interior angles?

Back

They are equal.

Front

If angle 1 is 70 degrees, what is angle 2 if they are corresponding angles?

Back

Angle 2 is also 70 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal.