PLS HELP THIS IS MY FINAL

Find the value of the variable and the length of each secant segment

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.