Which three lengths could be the lengths of the sides of triangle?

11cm, 11cm, 24 cm

18cm, 12cm, 9cm

9cm, 19cm, 10cm

4cm, 7cm, 23cm

18cm, 12cm, 9cm

Step-by-step explanation:

Any two side lengths of a triangle added together must be bigger than the third side length and the difference between the two side lengths of a triangle must be smaller than the third side length.

18 + 12 is bigger than 9 and 18 - 12 is smaller than 9

same goes for

12 + 9 > 18 and 12 - 9 < 18