Answer:
∠K = 60°
∠N = 120°
∠M = 130°
∠L = 50°
Explanation:
Sum of all the angles = 360
x + 2x + 3x - 50 + x -10 = 360
x +2x + 3x + x - 50 - 10 = 360
7x - 60 = 360
7x = 360 + 60
7x = 420
x = 420/7
x = 60
∠K = 60°
∠N = 2*60 = 120°
∠M = 3*60 - 50 = 180 - 50 = 130°
∠L = 60 - 10 = 50°