The answer is B
See if we shift pt C by one box upwards and 3 box rightward we reach pt C' , each box represent 2 units so the translation is x--> x+6
And y--> y+2
Answer --> b
What are you asking is their a problem to it?
It is just asking to find the sum of interior angles
So follow this rule 180(n-2)
180(5-2)
180(3)= 540
So in another words: a+b+c+d+e=540
