Parallel Lines Intro

What are parallel lines?

• Lines that intersect at one point.

• Lines that never intersect

• Lines that intersect at multiple points.

• Lines that are perpendicular to each other.

How are parallel lines represented in geometry?

• By two lines that intersect at a point.

• By two lines that intersect at a right angle.

• By two lines that never intersect and are always the same distance apart.

• By two lines that are perpendicular to each other.

If two lines are parallel, what can you say about their slopes?

• Their slopes are undefined.

• Their slopes are negative.

• Their slopes are equal.

• Their slopes are perpendicular.

What is the sum of the interior angles formed by two parallel lines and a transversal?

• 270

• 90

• 360

• 180

What is the alternate interior angles theorem?

• Pairs of alternate interior angles are supplementary.

• Pairs of alternate interior angles are equal.

• Pairs of alternate interior angles are parallel.

• Pairs of alternate interior angles are congruent.

If two lines are parallel, what can you say about their corresponding angles?

• Corresponding angles are equal.

• Corresponding angles are perpendicular.

• Corresponding angles are congruent.

• Corresponding angles are supplementary.

What is the relationship between corresponding angles and alternate interior angles?

• Parallel

• Perpendicular

• Supplementary

• Congruent

How can you prove that two lines are parallel using the alternate interior angles theorem?

• By showing that the alternate interior angles formed by the two lines are congruent.

• By showing that the alternate interior angles formed by the two lines are supplementary.

• By showing that the alternate interior angles formed by the two lines are equal.

• By showing that the alternate interior angles formed by the two lines are acute.