P5: Properties of Parallel lines

Front

What are parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

What is the Corresponding Angles Postulate?

Back

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

Front

What are Alternate Interior Angles?

Back

Angles that are on opposite sides of the transversal and inside the two parallel lines; they are equal.

Front

What are Alternate Exterior Angles?

Back

Angles that are on opposite sides of the transversal and outside the two parallel lines; they are equal.

Front

What are Consecutive Interior Angles?

Back

Angles that are on the same side of the transversal and inside the two parallel lines; they are supplementary.

Front

If angle 5 is 65 degrees, what is the measure of its corresponding angle?

Back

65 degrees.

Front

If two parallel lines are cut by a transversal and one angle measures 130 degrees, what is the measure of the consecutive interior angle?

Back

50 degrees.

Front

What is the sum of the measures of consecutive interior angles?

Back

180 degrees.

Front

If angle 1 is 60 degrees, what is the measure of angle 3 if angle 1 and angle 3 are alternate interior angles?

Back

60 degrees.

Front

What is the relationship between the angles formed when a transversal crosses parallel lines?

Back

Certain pairs of angles are equal, while others are supplementary.