Question

ABCD is a parallelogram.

Answer 1

ABCD is a parallelogram

m<A = m<C = 63
so  x = 63

z = 72

360 - 2(72) - 2(63) = 90

y = 90/2 = 45

answer
x = 63
y = 45
z = 72

Answer 2

$m\angle x=63^o\\\\m\angle z=72^o\\\\m\angle y=180^o-(72^o+63^o)=180^o-135^o=45^o$