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Answer:
A is equal to 5x into 4x
20 as it is Alternative interior angle
Step-by-step explanation:
5x +4x = 180
9x = 180
x = 20
angle B is 6x
angle D
5x + 4x+ 6x = 180 ( sum of the angle of triangle)
15x = 180
x = 12
angle A and C is 20
angle B and D is 12
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