Answer :

(i) we have PM=4cm, QM=4.5 cm,PN=4 cm and NR=4.5 cm

Hence PM/QM=4/4.5=40/45=8/9


PN/NR=4/4.5=40/45=8/9


PM/QM= PN/NR


by the converse of proportionality theorem


MNQR


(ii) we have PQ=1.28cm, PR=2.56 cm,PM=0.16 cm and PN=0.32 cm


Hence PQ/PR=1.28/2.56=128/256=1/2


PM/PN=0.16/0.32=16/32=1/2


PQ/PR = PM/PN


by the converse of proportionality theorem


MNQR


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