body { font-family: Arial, sans-serif; /* Ensures a clean, readable font */ margin: 20px; /* Provides some spacing around the table */ } table { width: 100%; /* Makes the table stretch to fill the container */ border-collapse: collapse; /* Eliminates the gap between borders */ table-layout: fixed; /* Helps keep columns evenly spaced */ } th, td { border: 1px solid black; /* Adds a black border around each cell */ padding: 10px; /* Adds space inside each cell */ text-align: center; /* Centers the text horizontally in cells */ } th { background-color: #e0e0e0; /* A light grey background for header cells */ }

$\begin{array}{r}\text{Number of sides }(n)\end{array}$	$\begin{array}{r}\text{Measure of all interior angles}\\ (n-2)\times {180}^{\circ }\end{array}$	$\begin{array}{r}\text{Measure of each interior angle}(\theta )\\ \frac{(n-2)\times {180}^{\circ }}{n}\end{array}$	$\begin{array}{r}\text{Measure of each interior angle}(\theta )\\ =180°-\text{each exterior angle}\end{array}$
$\begin{array}{r}3\end{array}$	$\begin{array}{c}(n-2)\times {180}^{\circ }\\ (3-2)\times {180}^{\circ }={180}^{\circ }\end{array}$	$\begin{array}{r}\frac{(3-2)\times {180}^{\circ }}{3}={60}^{\circ }\end{array}$	$\begin{array}{r}=180°-60°=120°\end{array}$
$\begin{array}{r}4\end{array}$	$\begin{array}{r}(n-2)\times {180}^{\circ }\\ \\ (4-2)\times {180}^{\circ }={360}^{\circ }\end{array}$	$\begin{array}{r}\frac{(4-2)\times {180}^{\circ }}{4}={90}^{\circ }\end{array}$	$\begin{array}{r}=180°-90°=90°\end{array}$
$\begin{array}{r}5\end{array}$	$\begin{array}{r}(n-2)\times {180}^{\circ }\\ (5-2)\times {180}^{\circ }={540}^{\circ }\end{array}$	$\begin{array}{r}\frac{(5-2)\times {180}^{\circ }}{5}={108}^{\circ }\end{array}$	$\begin{array}{r}=180°-108°=72°\end{array}$
$\begin{array}{r}6\end{array}$	$\begin{array}{r}(n-2)\times {180}^{\circ }\\ (6-2)\times {180}^{\circ }={720}^{\circ }\end{array}$	$\begin{array}{r}\frac{(6-2)\times {180}^{\circ }}{6}={120}^{\circ }\end{array}$	$\begin{array}{r}=180°-120°=60°\end{array}$