Question

what would be the possible third length to form a triangle for PR if QR equals 21 cm and RQ equals 5 cm

Answer 1

you need to think about this
why wouldn't 14 be a possible length?

Answer 2

Well first, do you have a diagram/ make a diagram?

Answer 3

wouldn't be 14 because its less than the two sides added together?

Answer 4

5 + 14 = 19
and the other side is 21 ....

you are on the right track but not correct

it is something to do with the values of the 3 sides

Answer 5

lets try to draw a triangle with sides 21, 5 and 14

Answer 6

maybe 16?

Answer 7

wait 17 or 18

Answer 8

Dark do you have a diagram?

Answer 9

no :/

Answer 10

yes - now you are getting there
5, 16 and 21 would give a straight line right?

Answer 11

yea..

Answer 12

so -

Answer 13

what does the length of the 3rd side have to be
greater than ?

Answer 14

25..

Answer 15

26*

Answer 16

No - greater than 21 - 5

Answer 17

as you saide 17 or 18 would be possible lengths

Answer 18

so I was right?