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Linear Pair

In the given ...

Question

In the given figure, if l || m, what is the value of x?

(a) 60

(b) 50

(c) 45

(d) 30

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Solution

Given figure is as follows:

Sinceand are vertically opposite angles, therefore,

Also, 3y and are alternate interior opposite angles, therefore,

Substituting in equation (i), we get:

Hence the correct choice is (a).

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