Given two sides of a triangle, you can set up an inequality using the sum and difference to show the range of possible lengths for the third side, x.
31 and 28
< x <
14 and 22
19 and 45
8 and 17
If a triangle has lengths of 45 cm and 9 cm, check all the possible lengths for the third side.
35 cm
58 cm
47 cm
54 cm
39 cm