Answer:
Sum = 180 degrees
Angle A = 85 degrees
Angle B = 95 degrees
Explanation:
A triangle's angles will always be equivalent to 180 degrees when finding their sum.
For this triangle, 80, 15, and A will equal 180 degrees.
80 + 15 + A = 180
Combine like terms
95 + A = 180
Isolate variable A by subtracting both sides by 95
A = 85
85 degrees
Similar to a triangle, a straight line is also equivalent to 180 degrees
A + B = 180
Plug in the value for variable A
85 + B = 180
Isolate variable B by subtracting both sides by 85
B = 95