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. 3C. 24D. 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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