Question

In the diagram below, AB is parallel to CD. What is the value of x?

A. 120
В. 80
с. 100
D. 60

Answer 1

120

Explanation:

By the rule of opposite angles, we can determine that x=120 because:

AB is parallel to CD

120 degree angle (let's call it Y) is on AB

X (we can see that it is obtuse) is on CD

So, Y is congruent to X, vice versa, so x=120

hope this helps! :)

ibrahim