Answer:
D
Step-by-step explanation:
AC is a line, and lines are equal to 180°
BXC is 90°, as indicated
So this means that BXA has to equal 90° in total
This means the angles a and b can't be complimentary, nor supplementary
Vertical angles are angles with equal degrees, vertical to one another. so, we can cross that off.
We are left with none of the above.
