Question

Geometry help D:

Answer 1

The 40 and 40 are vertical angles which are equal. The 85 forms a supplementary angle with (180-85) (supplementary angles add up to 180 because they form a straight line)

Notice the two a's are vertical angles too.

Answer 2

so a is 45?

Answer 3

Looks that way :)

Answer 4

ok, thanks