1.

In figure if I║m , n║p and ∠1 = 850 find ∠2 

Answer»

∴ n║p and m is transversal 

∴ ∠1 = ∠3 = 850 [Corresponding angles] 

 Also m║I & p is transversal 

∴ ∠2 + ∠3 = 1800 [∵Consecutive interior angles] 

⇒ ∠2 + 850 = 1800 

⇒ ∠2 + 1800 - 850 

⇒ ∠2 = 950  



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