Question

In each diagram, line m is parallel to line n, and line s intersects lines m and n. Based on these diagrams, which statement is true?answer choices:

A-The value of x is 40, because the measures of all the angles shown in the diagrams add to 360°.
B-The value of x is 80, because the measures of each pair of angles shown in the diagrams add up to 180°.
C-The value of x is 100, because the angles shown in the diagrams are congruent.
D-
The value of x is 90, because the angles in the diagram are right angles.

Answer 1

B. x is 80

Explanation:

x and 100 are even co-interior angles which add up to 180.

x+100=180

x=180-100

x=80