2-1: Parallel Lines and Transversals

Front

Corresponding angles are...

Back

congruent

Front

Solve for x: If angle A and angle B are vertical angles and angle A = 2x + 10, angle B = 4x - 2, find x.

Back

x = -2, Vertical Angles

Front

Solve for x: If angle 1 and angle 2 are corresponding angles and angle 1 = 3x + 5, angle 2 = 2x + 20, find x.

Back

x = 6, Corresponding Angles Theorem

Front

Solve for x: If angle 3 and angle 4 are supplementary and angle 3 = 5x + 10, angle 4 = 2x + 30, find x.

Back

x = 3, Supplementary Angles

Front

Define alternate interior angles.

Back

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

Front

What is the Alternate Exterior Angles Theorem?

Back

If two parallel lines are cut by a transversal, then each pair of alternate exterior angles is congruent.

Front

What are vertical angles?

Back

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

Front

Define linear pair of angles.

Back

A pair of adjacent angles whose non-common sides form a straight line; they are supplementary.

Front

Solve for x: If angle 5 and angle 6 are same-side interior angles and angle 5 = 3x + 15, angle 6 = 2x + 25, find x.

Back

x = 10, Same-Side Interior Angles Theorem

Front

What is the Corresponding Angles Postulate?

Back

If two parallel lines are cut by a transversal, then each pair of corresponding angles is congruent.