Answer:
No, it can't
Explanation:
In order for three side lengths to form a triangle, they must satisfy the triangle inequality theorem, which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
5 + 3 = 8
18 > 8
Wrong
5 + 18 = 23
3 < 23
3 + 5 = 8
18 > 8
Wrong
So, it can't be the lengths of the triangle.