Q27 of 69 Page 9

In Fig. 9.52, the value of x is

In

∠A + ∠ABD + ∠BDA = 180o


∠ABD = 100o


In


∠EBC + ∠ECB + ∠CEB = 180o


-100o + 40o + ∠CEB = 00


∠CEB = 60o


∠CEB + ∠CED = 180o (Linear pair)


60o + x = 180o


x = 120o

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