Transversals & Parallel Lines

What are vertical angles?

• Angles that are adjacent to each other when two lines intersect.

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

• Angles that are supplementary to each other when two lines intersect.

• Angles that are equal to 90 degrees when two lines intersect.

What are parallel lines?

• Lines that intersect at a right angle.

• Lines that never meet and are always the same distance apart.

• Lines that curve away from each other.

• Lines that are only found in three-dimensional space.

What is the value of x if two angles are supplementary and one angle measures 67°?

• 113°

• 120°

• 90°

• 100°

What are alternate interior angles?

• Pairs of angles that lie outside two lines and on the same side of a transversal.

• Pairs of angles that lie between two lines and on opposite sides of a transversal.

• Pairs of angles that are equal to each other regardless of their position.

• Pairs of angles that are supplementary to each other.

What is the relationship between parallel lines and corresponding angles?

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

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

• If two parallel lines are cut by a transversal, then corresponding angles are always equal to 90 degrees.

• If two parallel lines are cut by a transversal, then corresponding angles are never equal.

What is the value of y if two angles are complementary and one angle measures 30°?

• 30°

• 45°

• 60°

• 75°

What are corresponding angles?

• Pairs of angles that are equal in measure.

• Pairs of angles that are in similar positions at each intersection where a transversal crosses two lines.

• Angles that are opposite each other when two lines intersect.

• Angles that add up to 90 degrees.

How do you find the measure of an angle if you know its supplementary angle?

• Add the measure of the known angle to 90°.

• Subtract the measure of the known angle from 180°.

• Multiply the measure of the known angle by 2.

• Divide the measure of the known angle by 2.

What is the definition of complementary angles?

• Two angles whose measures add up to 90°.

• Two angles that are equal in measure.

• Two angles that add up to 180°.

• Two angles that are adjacent to each other.

What is the relationship between parallel lines and alternate interior angles?

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

• Alternate interior angles are always supplementary when parallel lines are cut by a transversal.

• Parallel lines do not affect the measurement of alternate interior angles.

• Alternate interior angles are equal to the exterior angles when parallel lines are involved.