Hushar Mulga
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Given below are some triangles and lengths of line segments. Identify ray PM is the bisector of ∠QPR.

Practice Set 1.2 | Q 1.2 | Page 13

Given below are some triangles and lengths of line segments. Identify ray PM is the bisector of ∠QPR.

Practice Set 1.2 | Q 1.2 | Page 13
Solution

In ΔPQR,

`"PR"/"PQ" = 7/10`    .....(i)

`"PR"/"PQ" = 7/10`    .....(i)

`"RM"/"QM" = 6/8`   ......(ii)

From (i) and (ii),

`"PR"/"PQ" ≠ "RM"/"QM"`

∴ Ray PM is not the bisector of ∠QPR.

Solution:-

Given:

  • Triangle PQR
  • PR/PQ = 7/10 ……(i)
  • RM/QM = 6/8 ……(ii)

To prove: Ray PM is not the bisector of angle QPR.

Proof:

  • From (i) and (ii), we have PR/PQ ≠ RM/QM.
  • Therefore, by the converse of the angle bisector theorem, Ray PM is not the bisector of angle QPR.
  • Hence, the statement is proven.

Therefore, in triangle PQR with PR/PQ = 7/10 and RM/QM = 6/8, Ray PM is not the bisector of angle QPR.

Chapter 1. Similarity- Practice Set 1.2 –  Q 1.2 – Page 13

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