Question

what are the missing angles? x, t, y, z, w

Answer 1

the summation of the three interior angles of a triangle =180
so in the triangle that contains 42,73, and x
x=180-(42+73)

Answer 2

x=65 and the rest?

Answer 3

the marked angle equals to 180-142 then you can find w

Answer 4

w=38