:) Well, I dunno about anyone else but this question makes my head spin!
Answer:
D:15
Step-by-step explanation:
You divide thirty by two and get 15.
This is a simple consequence of the Zero-sum problem: https://en.wikipedia.org/wiki/Zero-sum_problem
Both of the other angles should be 45. 180-90=90. 90 divided by 2 equals 45