Bunuel received 3 Kudos for post In the xy-plane above, is angle QPR a right angle?.

GiverPostDate
justforfewusers2In the xy-plane above, is angle QPR a right angle?06-Aug-2015
fahmed1990In the xy-plane above, is angle QPR a right angle?05-Jul-2015
fcosorioIn the xy-plane above, is angle QPR a right angle?20-Jun-2015

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