Question

in the given figure AB//CD .Then find x ?

Answer 1

Answer:

since AB parallel to CD

<BPQ+<DQP=180

because the sum co- interior angles of parallel lines are supplementary

5x-20+2x-10=180

7x-30=180

7x=180+30

7x=210

x=210/7

x=30

Step-by-step explanation:

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Answer 2

Answer:

x = 30

Step-by-step explanation:

5x-20degree + 2x-10degree = 180degree  (sum of consecutive angle is 180degree)

7x-30degree = 180degree

7x = 180degree + 30degree

7x = 210degree

x = 30

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5x-20degree = (5*30)-20

                    = 150 - 20 = 1300degree

2x-10degree = (2*30) -10

                     = 60 - 10 = 50degree

(130 + 50)degree  = 180degree

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