Answer:
Perimeter ⇒ 33 ( units )
Explanation:
As you can see, the points share a common y - value, so that they should be positioned with a horizontal distance among them;
Now if the difference is 11 units, we can determine the perimeter of this equilateral Δ assuming the sides are of equal length ( ≅ ) knowing that they do ∈ to an equilateral Δ;
Solution; Perimeter ⇒ 33 ( units )