Question

http://prntscr.com/9v7v7d
Just wanted to check it, to make sure it was correct?

Answer 1

It is 70, not 60. Careful

Answer 2

You add the two angles then do 180 MINUS that amount

Answer 3

Ah, for a second there, I replace 40 with 60.

Answer 4

Well, good thing I checked, then :P

Answer 5

Thanks.

Answer 6

:P yep