Question

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

Answer 1

someone please help!!

Answer 2

please!!!

Answer 3

sorry can u check it plz... i have some doubt on it

SQ + SR < PQ + QR
or
SQ + SR < PQ + PR

Answer 4

sorry its SQ + SR < PQ + PR.

Answer 5

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

Answer 6

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

Answer 7

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

Answer 8

Thank you @TheMind