Question

Look at the shape Isabelle rolled her play dough into.



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

4 cm, 5 cm, 9 cm

1 cm, 6 cm, 7 cm

3 cm, 5 cm, 12 cm

2 cm, 3 cm, 4 cm

Answer 1

Hint:

with any triangle that has sides x, y and z,

all of the following must be true for a triangle to be possible


x+y > z

x+z > y

y+z > x

Answer 2

sum of two sides of a triangle must be greater than third

Answer 3

that is the last option