Question

Suppose you know the perimeter of n triangles in question 15. What would you do to find the perimeter of n + 2 triangles?

A. Add the perimeter of two more triangles.
B. Subtract the perimeter of two triangles.
C. Multiply the perimeter of n triangles by 2.
D. Divide the perimeter of n triangles by 2.

Answer 1

To find the perimeter of n + 2 triangles, simply add the perimeter of two more triangles to the perimeter of the original n triangles.

Step-by-step explanation:

If you know the perimeter of n triangles and you need to find the perimeter of n + 2 triangles, think about what the perimeter represents. It's the total length of the sides of a polygon. Therefore, to find the perimeter of n + 2 additional triangles, you would simply add the perimeter of two more triangles to the perimeter of the original n triangles.

The correct choice from the given options would thus be:

• A. Add the perimeter of two more triangles.

This is because each triangle has its own perimeter, and if you have n triangles, their combined perimeters give you the total. To add two more triangles, you just calculate the perimeter of those two and add it to the existing total, resulting in the perimeter for n + 2 triangles.