Parallel Lines Cut by a Transversal

Front

Vocabulary: Angles that are across from each other

Back

Vertical angles are angles that are opposite each other when two lines intersect.

Front

If angle 8 is 70 degrees, what is the relationship between angle 2?

Back

Angle 2 is also 70 degrees because they are corresponding angles.

Front

What is the value of x if angle 1 + angle 2 = 180 degrees and angle 1 = 72 degrees?

Back

x = 108 degrees.

Front

Find the measure of angle C if angle A + angle C = 180 degrees and angle A = 64 degrees.

Back

∠C = 116°.

Front

What angle corresponds to angle 6?

Back

Angle 2 corresponds to angle 6.

Front

Define corresponding angles.

Back

Corresponding angles are angles that are in the same position on different parallel lines cut by a transversal.

Front

What are alternate interior angles?

Back

Alternate interior angles are angles that are on opposite sides of the transversal and inside the two lines.

Front

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

Back

Alternate exterior angles are equal.

Front

What is the sum of the interior angles of a triangle?

Back

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

Front

If angle 3 is 50 degrees, what is the measure of angle 5 if they are alternate interior angles?

Back

Angle 5 is also 50 degrees.