Answer:
angle 4 = 90 (vertical to the other 90)
angle 2 = 68 (vertical to the other 68)
angle 5 = 180 - angle 4 - angle 2 = 22 (triangle angle sum)
angle 1 + 68 = 180
angle 1 = 112
angle 3 + 90 = 180
angle 3 = 90
angle 6 + angle 5 = 180
angle 6 = 180 - 22 = 158
Explanation:
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