Problem:
A polygon with $9$ vertices has the coordinates $\left(
\begin{array}{cc}
 0.049 & 0.644 \\
 0.051 & 0.144 \\
 0.082 & 0.047 \\
 0.181 & 0.456 \\
 0.464 & 0.424 \\
 0.482 & 0.552 \\
 0.681 & 0.412 \\
 0.874 & 0.052 \\
 0.879 & 0.59 \\
\end{array}
\right)$. Estimate the polygon's interior angles (in radians), area, and perimeter. Also, classify the polygon as 'Simple' or 'Convex'.
Answer:
Angles: $\{0.89,1.88,5.16,3.97,0.19,6.14,0.54,1.59,1.63\}$ 
Perimeter: $4.72$ 
Type: Simple 
Area: $0.34$
{'source': 'AMPS', 'file': 'amps/mathematica/geometry/polygons/37671.txt'}