A vertical angles
b complementary angles
c supplementary angles
d none of the above

d none of the above

Step-by-step explanation:

a vertical angles   opposite angles made by intersecting lines  false

b complementary angles   add to 90 degrees  false

c supplementary angles   add to 180 degrees false

d none of the above

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!