I would say the answer is c
For the first equation n + 4 = 5, because 0 + 4 is not equal 5
Answer:
1= 70
2= 65
3= 95
For 1, just solve 180-(65+45) and then for 2, subtract #1 and 45 from 180. Then just solve for #3 by using 180-(#2+20)
The answer is A
The midpoint is the average of the end points.