Problem:
A polygon with $3$ vertices has the coordinates $\left(
\begin{array}{cc}
 0.118 & 0.738 \\
 0.36 & 0.132 \\
 0.402 & 0.242 \\
\end{array}
\right)$. Estimate the polygon's interior angles (in radians), area, and perimeter. Also, classify the polygon as 'Simple' or 'Convex'.
Answer:
Type: Simple 
Angles: $\{0.14,0.75,2.25\}$ 
Area: $0.03$ 
Perimeter: $1.34$
{'source': 'AMPS', 'file': 'amps/mathematica/geometry/polygons/96712.txt'}