A simple proof of Feuerbach's theorem
The theorem of Feuerbach states that the nine-point circle of a nonequilateral triangle is tangent to both its incircle and its three excircles. We give a simple proof of this theorem.
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| Format: | Artikel |
| Sprache: | eng |
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| Zusammenfassung: | The theorem of Feuerbach states that the nine-point circle of a
nonequilateral triangle is tangent to both its incircle and its three
excircles. We give a simple proof of this theorem. |
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| DOI: | 10.48550/arxiv.1610.03962 |