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प्रश्न
उत्तर
Slope of OM = `(7 - 5)/(1 -5) = 2/(-4) = (-1)/2`
Slope of PN = `(8 -4)/(4 -2) = 4/2` = 2
Slope of OM x Slope of PM = `1/2 xx 2 = -1`
`therefore` OM and PN bisect each other at 90°. Hence, MNOP is a square.
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