Question

In the figure, PQ is parallel to RS. (see picture)

Which of the following angles has a measure equal to 100°?

A) a

B) b

C) c

D) d

Answer 1

A

Explanation:

Because B corresponds with 80 and a line segment is 180 degrees b + a =180 and a would be 100.

Answer 2

A, because 180-80=the 100° needed