Q. 7 N

In Δ PQR, P—M—Q and P—N—R. If PQ = 18, PM = 12, PR = 9 and NR = …, then ||
A.

B. 3

C. 24

D. 6

Answer :

We have



Given: P – M – Q and P – N – R


In ∆PQR, MN QR.


PQ = 18,


PM = 12 &


PR = 9


To find: NR = ?


In ∆PQR, when MN QR.



Substituting the given values in the above equation,




PN = 6


Observe the diagram,


PR = PN + NR


NR = PR – PN


NR = 9 – 6


NR = 3


Thus, option (b) is correct.

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