Polygon Area Calculator

Simple calculator for area of arbitrary polygons, given their side lengths and minimal neccessary number of angles.
The site: pier-bezuhoff.github.io/polygon-area

Features

• Arbitrary N-polygons with arbitrary side lengths
• Minimum required parameteres (sides + angles)
• All non-specified angles are also calculated
• Visualized
• Regular polygons
• Light/dark mode
• Responsive design for mobile
• Last used parameters are persisted in localStorage

NB

Triangle requires 0 additional angles, quadrilateral — 1, pentagon — 2, hexagon — 3, etc.
Out of 2 possible configurations of vertices chosen one without self-crossing edges and preferably convex.
When no valid polygon is possible given inputted parameters, it will appear open and no area is returned.