Rounding of an angle value can introduce an error of up to 0.5, so the sum of three rounded angles of a triangle can be 179, 180 or 181 degrees. And the solution with something like

angleC = 180 – angleA – angleB

where angleA and angleB are **rounded** angle values is wrong!
I suggest adding new test cases:

assert checkio(1, 2, 2) == [29, 76, 76], "sum == 181"
assert checkio(1, 3, 3) == [19, 80, 80], "sum == 179"

and rechecking.

Created at: March 6, 2017, 8:30 p.m.; Updated at: March 20, 2017, 10:08 p.m.