The sum of the three angles formed at the intersection of two straight lines is 275 degrees. Find all the corners that are formed.

When two straight lines intersect, vertical angles are formed, which means that the opposite angles are equal.
Sum of all angles = 360 *
So 4 angle = 360-275 = 85
angle 4 = angle 2
Hence, angle 2 = 85
Sum of 1 and 3 angles = 360-85-85 = 190
Angle 1 = 190: 2 = 95
Answer: angle 1 = 95, angle 2 = 85, angle 3 = 95, angle 4 = 85.