File:Roberts triangle theorem n=7.svg
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Summary
| Description |
English: Seven lines tangent to a semicircle form five triangular faces. According to Roberts's triangle theorem, every lines with no two parallel and no three meeting at a point must form at least triangular faces; this construction shows that this bound cannot be improved. |
| Date | |
| Source | Own work |
| Author | David Eppstein |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:57, 27 October 2022 | | 432 × 504 (665 bytes) | David Eppstein | Uploaded own work with UploadWizard |
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