ANSWER
Yes, this forms a triangle
Step-by-step explanation
We want to check if the measurements 11, 11 and 11 can make the side of a triangle.
We will use the Triangle Inequality Theorem.
We have to check if the sum of any of the two measurements will be greater than the third. If yes, then, they can form a triangle and vice versa.
That is:
11 + 11 = 22
Since 22 is greater than 11, the measurements can form a triangle.