So for a hexagon, the sum of all interior angles is 720°, all we need to do is add all the angles up and set it to 720 to get angle B.

Firstly, combine like terms to get 
Next, subtract 612 on each side, and your answer should be 
Answer:
see explanation
Step-by-step explanation:
The main diagonal is the perpendicular bisector of the other diagonal. However the other diagonal does not bisect the main diagonal.
Thus the diagonals do not bisect each other.
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Answer:
-8
Step-by-step explanation:
Answer:
HIStep-by-step explanation: