Answer:
a = 131, b = 49, c = 131 (degrees)
Explanation:
AEC + CED + BED + DEA = 360 (degrees)
Since angel AEC and DEB are the same, you can multiply 49 by two and you'd get 98.
Subtract 98 from 360 = 262 (degrees)
The remaining two angles are the same as well, so you need to divide 262 by 2 = 131
Answer = 131 (degrees)