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Answer
Figure This!

Figure 1 has only one white triangle. Since each side is 1 inch long, its perimeter is 3 inches.

How many white triangles are in Figure 2? What is the perimeter of each of these triangles? What is the sum of the perimeters for Figure 2?

Make a table to help answer the questions:

 

 
Figure Number
Side Length
of Each White Triangle (inches)
Perimeter (p)
of each white triangle p = 3 × side length (inches)
Total Number (n)
of White Triangles
Sum (np)
of the perimeters
1 1 3 1 3
2 ? ? ? ?
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