Answer:
b
Step-by-step explanation:
I Think B is the right answer
x = 70
Interior angles of a 4 sided shape = 360
80+70 = 150
360-150 = 210
210/3 = 70
1 x 1 x 1 x 1 = 1
Hope this helps. :)
hmmmmmmmmmmmmmmmmmmmmm
