Describe a proportional relationship involving some product or service and its cost that IS proportional. Explain why it is a pr
oportional relationship, and identify the constant of proportionality. Show your work. Use tables, graphs words, and numbers to explain your answer.
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The number of triangles is n-2 n= number of sides 8-2= 6 triangles if applying this you won't have to draw any diagonals to find the number of triangles just subtract 2 from the number of sides