Problem:
A polygon with $3$ vertices has the coordinates $\left(
\begin{array}{cc}
 -0.596 & 0.147 \\
 -0.51 & 0.324 \\
 0. & 0. \\
\end{array}
\right)$. Estimate the polygon's interior angles (in radians), area, and perimeter. Also, classify the polygon as 'Simple' or 'Convex'.
Answer:
Angles: $\{1.36,0.32,1.46\}$ 
Type: Convex 
Perimeter: $1.41$ 
Area: $0.06$
{'source': 'AMPS', 'file': 'amps/mathematica/geometry/polygons/92099.txt'}