Geometry Parallel Lines Cut by a Transversal

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What are corresponding angles?

Back

Corresponding angles are the angles that are in the same position on two parallel lines in relation to a transversal. They are equal.

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

Alternate exterior angles are the pairs of angles on opposite sides of the transversal but outside the two parallel lines. They are equal.

Front

What are supplementary angles?

Back

Supplementary angles are two angles that add up to 180 degrees.

Front

What are complementary angles?

Back

Complementary angles are two angles that add up to 90 degrees.

Front

If angle 4 is 70 degrees, what is the measure of angle 6 if they are corresponding angles?

Back

Angle 6 is also 70 degrees because corresponding angles are equal.

Front

If angle 5 is 110 degrees, what is the measure of angle 7 if they are alternate interior angles?

Back

Angle 7 is also 110 degrees because alternate interior angles are equal.

Front

If angle 1 is 45 degrees, what is the measure of angle 3 if they are vertical angles?

Back

Angle 3 is also 45 degrees because vertical angles are equal.

Front

If angle 2 is 30 degrees, what is the measure of angle 3 if they are supplementary?

Back

Angle 3 is 150 degrees because supplementary angles add up to 180 degrees.