Answer:To find the perimeter of a triangle, we need to add the lengths of all three sides.
1) Start by identifying the lengths of the sides of the triangle. The question does not provide specific lengths for the sides, so we will use 11 and 12 as placeholders.
2) Add the lengths of the sides to find the perimeter:
Perimeter = side1 + side2 + side3
Perimeter = 11 + 12 + side3
3) Simplify the expression:
Perimeter = 23 + side3
Therefore, the simplified expression for the perimeter of the triangle, using the given lengths of 11 and 12 for two of the sides, is Perimeter = 23 + side3.
Explanation: