Problem:
A polygon with $9$ vertices has the coordinates $\left(
\begin{array}{cc}
 0.009 & 0.673 \\
 0.034 & 0.749 \\
 0.229 & 0.675 \\
 0.532 & 0.437 \\
 0.789 & 0.685 \\
 0.817 & 0.382 \\
 0.92 & 0.351 \\
 0.946 & 0.344 \\
 0.986 & 0.918 \\
\end{array}
\right)$. Estimate the polygon's interior angles (in radians), area, and perimeter. Also, classify the polygon as 'Simple' or 'Convex'.
Answer:
Angles: $\{1.25,3.82,2.67,3.24,3.13,0.87,4.28,0.69,2.06\}$ 
Perimeter: $2.76$ 
Type: Simple 
Area: $0.25$
{'source': 'AMPS', 'file': 'amps/mathematica/geometry/polygons/7069.txt'}