Question

1. Know about possible side lengths of triangles: part of a review but can't find it. i can give the link.

Answer 1

The link is given

Answer 2

The Help is really appreciated :)

Answer 3

Possible side lengths describe possible triangles.
Say we have triangle ABC. AB = 10, BC = 12, and CA = 18.
To test if this is a possible triangle, we have a rule.

We add each different pair of side lengths together and subtract it from the remaining length. If all the lengths have been tested, and they result in values greater than 0, then that triangle is possible.

Here's an example on how to test ABC:
(AB + BC) - CA = (10 + 12) - 18 = 22 - 18 = 4 > 0
(AB + CA ) - BC = (10 + 18) - 12 = 28 - 12 = 16 > 0
(BC + CA) - AB = (12 + 18) - 10 = 30 - 10 = 20 > 0

And there you have it. If you need any further help, I can give you another example. :)

Answer 4

Ok thank you :)