question_answer 1)

In the adjoining figure:                                (i) Is \[\angle 1\] adjacent to \[\angle 2\] ? (ii) Is \[\angle AOC\] adjacent to \[\angle AOE\]?  (iii) Do \[\angle COE\] and \[\angle EOD\]form a linear pair?                  (iv) Are \[\angle BOD\] and \[\angle DOA\]supplementary?                   (v) Is \[\angle 1\] vertically opposite to \[\angle 4\]? (vi) What is the vertically opposite angle of \[\angle 5\]?                

Answer:

                (i) Yes! \[\angle 1\] is adjacent to \[\angle 2\]. (ii) No! \[\angle AOC\] is not adjacent to \[\angle AOE\]. (iii) Yes! \[\angle COE\] and \[\angle EOD\]form a linear pair. (iv) Yes! \[\angle BOD\] and \[\angle DOA\] are supplementary. (v) Yes! \[\angle 1\] is vertically opposite to \[\angle 4\]. (vi) The vertically opposite angle of \[\angle 5\] is \[\angle 2+\angle 3\].