Q. 94.0( 67 Votes )

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Answer :

(i) Yes, 1 is adjacent to 2 as:


Both the angles have common vertex O


Also,


Both the angles have a common arm OC


Also,


The non – common arms of both the angles i.e., OA and OC are on either side of the common arm


(ii) No, AOC is not adjacent to AOE as:


Both the angles have common vertex O


Also,


Both the angles have a common arm OA


But,


The non – common arms of both the angles i.e. OC and OE are on the same side of the common arm


(iii) Yes, COE and EOD form a linear pair because:


Both the angles have common vertex O


Also,


Both the angles have a common arm OE


Also,


The non – common arms of both the angles i.e., OC and OD are opposite rays


(iv) Yes, BOD and DOA are supplementary because:


Both the angles have common vertex O


Also,


The non – common arms of both the angles are opposite to each other


(v) Yes, 1 and 2 are vertically opposite to each other because:


These angles are formed due to the intersection o two straight lines i.e., AB and CD


(vi) COB is the vertically opposite angle of 5 because these are formed due to the intersection of two straight lines i.e., AB and CD


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