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M is the midpoint of PQ and N is the midpoint of PR, and O is the intersection of QN and RM, as shown. If QN = 12, and $PR = 17$, then find  OR.

 

 Oct 26, 2021
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OR = sqrt(ON2 + NR2)

 

ON = 1/3(QN)

 

NR = 1/2(PR)

 Oct 27, 2021

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