Figure pars is a parallelogram. The expression represent the measures of the angles in degrees. What is the value of x?

i will pick c put check it over to be sure

step-by-step explanation:

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1