Properties of Parallel Lines Practice

What is the measure of angle A?

70°

Part A which solution for the value of x in the figure is incorrect? A. x=75 B. x=35

Solution A is incorrect.

Find the measure of each labeled angle in the previous question.

One of the angles measures 100°, and the other angle measures 80°

Which reason could you give to explain your answer to the previous item?

The labeled angles are same-side interior angles, which are supplementary. The measures of supplementary angles total 18 degrees, so x + 75 plus 3x should be set equal to 180. The angle measures should not be set equal to each other.

Find the values of m and n.

m=60, n=24

Find the values of x and y.

x=100, y=10

Find the value of x.

x=20

Find the values of x and y.

x=42, y=30

Name a pair of alternate interior angles in the picture below.

∠C and ∠ F

Name all of the angles that are congruent to ∠B in the figure below.

∠C, ∠F, and ∠G