What does numerical expressions mean

*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

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?