What are vertical angles?

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

Factor and solve to find roots x squared -x - 90 =0