Answer:
C) 36°
Step-by-step explanation:
The sum of the exterior angles of a triangle add to 360 degrees
The exterior angle with x is (180-x) because it makes a straight line
72+144 +(180-x) = 260
Combine like terms
396-x = 360
Subtract 396 from each side
396 -396 -x = 260-296
-x = -36
Multiply by -1
x=36
