Q25 of 69 Page 9

In Fig. 9.50, what is value of x?

In

∠ABC + ∠ACB + ∠CAB = 180o


5y + 3y + x = 180o


8y + x = 180o (i)


∠ABC + ∠CBD = 180o (Linear pair)


5y + 7y = 180o


y = 15o


Putting values of y in (i), we get


8 * 15 + xo = 180o


x = 60o

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