Angle and Length Measurement of a Polygon
Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
The locators provide a configurable interface for measuring the side lengths and angles of a polygon.
Contributed by: Faisal Whelpley (January 2009)
Open content licensed under CC BY-NC-SA
Snapshots
Details
The tool detects the closest edge or vertex when the locators are moved and will snap to the highlighted item on release. In the case of self-intersecting polygons, intersection of edges is also detected.
Polygons: create regular 
-sided polygon using "automatic", random vertices using "random", or custom vertices using "manual".
Tool: "constant angle" preserves the separation of the two lines and "constant length" preserves the length of each of those lines.
Permanent Citation
"Angle and Length Measurement of a Polygon"
http://demonstrations.wolfram.com/AngleAndLengthMeasurementOfAPolygon/
Wolfram Demonstrations Project
Published: January 20 2009
Nested Polygon Disks
Michael Schreiber
Signed Area of a Polygon
Bruce Atwood (Beloit College) and Stan Wagon (Macalester College)
Total Areas of Alternating Subtriangles in a Regular Polygon with 2n Sides
Jay Warendorff
Japanese Theorem for Cyclic Polygons
David Kang Myung Yang
Median Theorem for Polygons
Roger B. Kirchner
Approximating Pi with Inscribed Polygons
Rob Morris
Find the Angle Measure in a Regular Polygon, Part 2
Izidor Hafner
Find the Angle Measure in a Regular Polygon
Izidor Hafner
Labeled Fuss-Catalan Polygon Divisions
Robert Dickau
Triangle Interior Angle Sum by Paper Folding
Jim Brandt
