How do get this answer?

Answer:
A line is at a degree of 180, so the line 170 is on can give you the degree of the smallest angle: 10. A traingel has a total degree of 180, so 125 + 10 = 135. Take 180 and subtract 135 to get x = 45º
Step-by-step explanation:
Answer:
x = 45°
Step-by-step explanation:
Since it's a triangle, the total degrees of it would be 180
You are given one of the angles measurements and another's' supplementary angle
180 - 125 = 55
Take the 170 and subtract from 180 to get the interior angle of the triangle
180 - 170 = 10
Now subtract 55 and 10 to get x
55 - 10 = 45