## pratu043 3 years ago If S is any point in the interior of triangle PQR then prove that SQ + SR < PQ + QR.

1. pratu043

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2. pratu043

3. pratu043

4. mukushla

sorry can u check it plz... i have some doubt on it SQ + SR < PQ + QR or SQ + SR < PQ + PR

5. pratu043

sorry its SQ + SR < PQ + PR.

6. jiteshmeghwal9

Does it help @pratu043 ??? $\LARGE{s=90^o+{1 \over 2} \angle a}$

7. SNSDYoona

was wondering if i could use vectors to proof it? or u want basic trigonometries?

8. TheMind

the perimeter of tri PQR > the perimeter of tri SQR because S is inside PQR. in other word PQ+QR+PR > SQ+QR+SR take out the positive amount QR from both side PQ+PR > SQ+SR

9. pratu043

Thank you @TheMind