Q. 104.1( 68 Votes )

Indicate which pairs of angles are:



(i) Vertically opposite angles.

(ii) Linear pairs.

Answer :

(i) Following pairs of vertically opposite angles are as follows:


1 and 4


Also,


5 and 2 + 3


These all are pairs of vertically opposite angles because these are formed due to the intersection of two straight lines


(ii) Following pairs of linear pairs are as follows:


1 and 5


Also,


5 and 4


These all pairs are linear pairs because these all have a common vertex and their non – common arms are opposite to each other


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