File:Decagon simplicial arrangement.svg
Size of this PNG preview of this SVG file: 600 × 600 pixels. Other resolutions: 240 × 240 pixels | 480 × 480 pixels | 768 × 768 pixels | 1,024 × 1,024 pixels | 2,048 × 2,048 pixels | 720 × 720 pixels.
Original file (SVG file, nominally 720 × 720 pixels, file size: 644 bytes)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: A simplicial arrangement of 20 lines formed by the sides and symmetry axes of a regular decagon. An arrangement is simplicial when, taken as a subdivision of the projective plane, every region has three sides. The same construction produces a simplicial arrangement for any regular polygon. For polygons with even numbers of sides, such as this one, the line at infinity of the projective plane can be added to the arrangement to produce another simplicial arrangement, in this example an arrangement of 21 lines. |
| Date | |
| Source | Own work |
| Author | David Eppstein |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
|
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:52, 23 December 2022 | | 720 × 720 (644 bytes) | David Eppstein | Uploaded own work with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
