IMath 2 wk 1

Front

What is the definition of corresponding angles?

Back

Corresponding angles are pairs of angles that are in similar positions relative to two lines cut by a transversal. If the lines are parallel, corresponding angles are congruent.

Front

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

Back

Alternate interior angles are congruent when two parallel lines are cut by a transversal.

Front

What is the relationship between supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

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

Back

m∠6 = 70° because ∠2 and ∠6 are corresponding angles.

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

Define vertical angles.

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always congruent.

Front

What is the definition of a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

If two angles are complementary, what is their relationship?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

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 ∠1 and ∠5 are alternate exterior angles, what can be said about their measures if lines are parallel?

Back

If lines are parallel, then ∠1 and ∠5 are congruent.