Question

answer this questions
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Answer 1

Let angle A = 4y

                D = 5y

Since AB and CD are parallel

angle A + angle D = 180

4y + 5y = 180

9y = 180

y = 20

angle A = 4*20 = 80

angle D = 5*20 = 100

angle B + angle C = 180

3x - 15 + 4x + 20 = 180

7x + 5 = 180

x = 175/7

x = 25

angle B = 3*25 - 15 = 60

angle C = 4*25 +20 = 120

Angle A= 80

Angle B = 60

Angle C = 120

Angle D = 100

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