Q. 163.8( 4 Votes )

In Fig 8.116, if l||m||n and 1 = 60°, find 2


Answer :

Since,

l m and P is transversal


Therefore,


Given that,


l m n


1 = 60o


1 = 3 = 60o(Corresponding angles)


Now,


3 + 4 = 180o(Linear pair)


60o + 4 = 180o


4 = 120o


Also,


m n and P is the transversal


Therefore,


4 = 2 = 120o(Alternate interior angles)


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