Р
2.
In A PQR, PM = 15, PQ = 25
PR = 20, NR = 8. State whether line
N
M
NM is parallel to side RQ. Give
reason.
R.
0 Q
Fig. 1.36
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Answers
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Solution-
By applying contradiction, we can prove that NM is parallel to RQ.
Let's assume, NM || RQ
Then,
ΔPRQ ≈ ΔPNM, as
∠P is common to both the triangles
∠PNM = ∠PRQ (as corresponding angle of parallel lines)
∠PMN= ∠PQR (as corresponding angle of parallel lines)
Applying similar triangle properties,
As the ratios came out to be same, so what we had assumed was correct.
Therefore, NM || RQ.(Proved)
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