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Sheet # 61 Critical Thinking

Name: _____________________ Date_____________

Use drawings, words, or numbers to explain how you got your answer.

Maria is making "trains" of equilateral triangles with 1-inch sides as shown below.

How does the perimeter of the entire train change each time she adds one more triangle to the end of the train?

Answer for sheet # 61

Perimeter increases by 2 everytime a triangle is added.