Answer:
C
Step-by-step explanation:
B and D are equal. You could call their sum = 2x
a = 25 degrees (Vertically Opposite Angles)
C = 95 degrees. (Vertically Opposite Angles)
The total is 360 degrees. So let's add everything up and see what we get.
a+b+c + 25 + d + 95 = 360 degrees. Substitute for the known letters.
25 + x + 95 + 25 + x + 95 = 360 Combine like terms on the left
50 + 2x + 95 + 95 = 360 Combine numbers on the left
240 + 2x = 360 Subtract 240 on both sides
240 - 240 + 2x = 360 - 240 Combine
2x = 120 Divide by 2
x = 60
b = 60
a = 25
a + b =60 + 25 = 85
