Can 1,1,2 be the length is a triangle

Alright, so in order to find this, you will nee to use the Triangle Inequality Theorem.

We'll make the values = to variables to make it easier. a=1 b=1 c=2

All of the inequities need to be true.

a+b>c

b+c>a

c+a>b

Now replace the variables.

1+1>2 2>2 (False)

1+2>1 3>1 (True)

1+2>1 3>1 (True)

Since one is false, 1,1, and 2 cannot make a triangle.