Answer:
1) 102
2) x = 31°; y = 6
3) m = 28°, n = 31°
4) x = 79°
Step-by-step explanation:
1) Angle ABD = 180 - 2(69) = 42
Angle DBC = 180/3 = 60
Angle ABC = 42 + 60 = 102
2) Angle ABC = 180 - 2(59) = 62
x = 62/2
x = 31°
ABD and CBD are congruent triangles so y = 6
3) 118 = m + 90
Exterior angle = sum of interior angles
m = 118 - 90 = 28°
n = (180-118)/2 = 31°
4) x = (180-22)/2 = 79°
