| Display title | Polar circle (geometry) |
| Default sort key | Polar circle (geometry) |
| Page length (in bytes) | 2,335 |
| Namespace ID | 0 |
| Page ID | 203728 |
| Page content language | en - English |
| Page content model | wikitext |
| Indexing by robots | Allowed |
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| Counted as a content page | Yes |
| Page image |  |
| HandWiki item ID | None |
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| Page creator | imported>Rtextdoc |
| Date of page creation | 16:48, 15 June 2021 |
| Latest editor | imported>Rtextdoc |
| Date of latest edit | 16:48, 15 June 2021 |
| Total number of edits | 1 |
| Recent number of edits (within past 90 days) | 0 |
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Description | Content |
Article description: (description)
This attribute controls the content of the description and og:description elements. | In geometry, the polar circle of a triangle is the circle whose center is the triangle's orthocenter and whose squared radius is
$ {\begin{aligned}r^{2}&=HA\times HD=HB\times HE=HC\times HF\\&=-4R^{2}\cos A\cos B\cos C=4R^{2}-{\frac {1}{2}}(a^{2}+b^{2}+c^{2}),\end{aligned}} $
where A, B, C... |
