Question

Help me with math. let me post first

Answer 1

For the first part, you can see that all together, they're 360 degrees, since it's a full around angle
So, they're all adjacent, next to each other, one is 90 degrees, the other is 135, and the third for us to figure out in the second part

Answer 2

For the second part, because, we said it's 360 degrees in all, adding the 3 angles is 360, so
90+135+x = 360
and solve for x

Answer 3

got it