Question

Please help I literally don’t understand this at all

Answer 1

x=13 y=10 z=3 d) 260

Explanation:

vertex angles are congruent so you can set them equal to each other and solve

and then a straight like adds up to 180 so 180-(7(x-3)+5y)= your missing angle and then that angles is congruent to its opposite so 2(5z+15)=60