IMath 2 wk 1

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they are in the same plane and do not intersect, no matter how far they are extended.

Front

If m∠7 = 110° and lines a ∥ b, what is m∠10?

Back

m∠10 = 70° (Alternate interior angles are equal when two lines are parallel.)

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in similar positions at each intersection where a straight line crosses two others.

Front

If m∠4 = 45° and lines a ∥ b, what is m∠12?

Back

m∠12 = 45° (Alternate interior angles are equal when two lines are parallel.)

Front

What are same side interior angles?

Back

Same side interior angles are pairs of angles that lie on the same side of the transversal and between the two lines.

Front

If m∠2 = 70° and lines a ∥ b, what is m∠6?

Back

m∠6 = 70° (Same side interior angles are equal when two lines are parallel.)

Front

What is the sum of supplementary angles?

Back

The sum of supplementary angles is 180°.

Front

If two angles are complementary, what is their sum?

Back

The sum of complementary angles is 90°.

Front

What is the relationship between alternate interior angles when two lines are parallel?

Back

Alternate interior angles are equal when two lines are parallel.

Front

Define transversal in geometry.

Back

A transversal is a line that crosses at least two other lines.