Question

Is the relationship between the number of sides of a polygon and the interior angle sum of the polygon proportional? Justify your answer in two ways.

Answer 1

Let:

`\begin{gathered} y=kx \\ \text{Where:} \\ k=\text{Constant of proportionality} \end{gathered}`
`\begin{gathered} 180=3k \\ k=(180)/(3)=60 \end{gathered}`
`y=180x-360`