Question

Find "a". Diagram in comments. Help please.

Answer 1

"C" = 40. Because 140 + 80 + 100 + 40 = 360

Answer 2

That's all I know though.

Answer 3

so you already know that c=40
a=?
b=?
d=?
e=?
f=?

Answer 4

Im not sure exactly what to do but I know for sure that angle d is a verticle angle so it might be easier to try and find the other angles where it gives you one of them. sorry im not more helpful, I thought I knew what was going on. :(