You're given two side lengths of 6 cm and 9 cm which measurement can you use for the length of the third side to construct a valid triangle

The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side. (Hence, the sum of the two smaller sides is greater than the larger side)

This means that the third side is shorter than 6 and 9 combined, but also 9 is shorter than 6 and the third side combined.

If the third side's length is x, then 3<x<15.

here is a big fat

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )