Flashcardizz G-3.2A: Angles and Intersecting Lines

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of a transversal and inside the two parallel lines. They are equal in measure.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position at each intersection where a straight line crosses two others. They are equal in measure.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that are on opposite sides of a transversal and outside the two parallel lines. They are equal in measure.

Front

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

Back

The alternate interior angles are equal.

Front

If angle 4 is 50 degrees, what is the measure of angle 7 if lines are parallel?

Back

Angle 7 is also 50 degrees because they are alternate interior angles.

Front

How do you identify corresponding angles in a transversal?

Back

Corresponding angles are found in the same relative position at each intersection of the transversal with the parallel lines.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal to each other.

Front

If angle 1 is 70 degrees, what is the measure of angle 6 if lines are parallel?

Back

Angle 6 is also 70 degrees because they are corresponding angles.

Front

What is the sum of the measures of angles on a straight line?

Back

The sum of the measures of angles on a straight line is 180 degrees.