Question

help!?!?

Answer 1

130 is the angle for b

Answer 2

?

Answer 3

a=30
b=?
c=20
so add a an c you get 50 so 180-50=130

Answer 4

so 100?

Answer 5

a=30
b=?
c=20
so add a an c you get 50 so 180-50=130

Answer 6

all the angles equal 180 an you have a and c which is 50 so 180-50=130

Answer 7

but that isn't a choice

Answer 8

what angle you need????

Answer 9

a

Answer 10

the angle it showed on the attachment was 30 @.@