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by proving AOB and DOC congruent
angle AOB=angle DOC (vertically opp)
AO=OC is given
AB = DC given
therefore by SAS it is congruent and area is also equal
similarilyfor part 2 we'll prove the traingles congruent
and for part 3- as AB=CD and AD=BC it is a llgm and ABllCD ,ADllBC
hope this helped.
angle AOB=angle DOC (vertically opp)
AO=OC is given
AB = DC given
therefore by SAS it is congruent and area is also equal
similarilyfor part 2 we'll prove the traingles congruent
and for part 3- as AB=CD and AD=BC it is a llgm and ABllCD ,ADllBC
hope this helped.
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