A square had a side (x + 1). A triangle has sides (x + 2), (x + 3), and (x + 5). The square and the triangles have the same perimeter. What is the perimeter? Please explain what you did! When I was calculating the perimeter for the square I got -14 units. Since the perimeter is the same for both the square and triangle I checked the answer my teacher gave and she said it was 28 units. Explain what I did wrong.