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Question -

In the following figure:
(i) Is тИа1 adjacent to тИа2?
(ii) Is тИаAOC adjacent toтИаAOE?
(iii) Do тИаCOE and тИаEOD form a linear pair?
(iv) Are тИаBOD and тИаDOA supplementary?
(v) Is тИа1 vertically opposite angle to тИа4?
(vi) What is the vertically opposite angle of тИа5?



Answer -

(i) Yes, тИа1 and тИа2 are adjacent angles.
(ii) No, тИаAOC is not adjacent to тИаAOE. [ тИ╡┬а OC and OE do not lie on either side of common arm OA] .
(iii) Yes, тИаCOE and тИаEOD form a linear pair of angles.
(iv) Yes, тИаBOD and тИаDOA are supplementary. [тИ╡ тИаBOD + тИаDOA = 180┬░]
(v) Yes, тИа1 is vertically opposite to тИа4.
(vi) Vertically opposite angle of тИа5 is тИа2 + тИа3 i.e. тИаBOC.

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