nine-point circle

circle passing through nine significant concyclic points defined from the triangle
Intangible mathematical_concept Q214533
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nine-point circle

Summary

nine-point circle is a mathematical concept[1]. It draws 99 Wikipedia views per month (mathematical_concept category, ranking #172 of 1,007).[2]

Key Facts

  • nine-point circle is credited with the discovery of Leonhard Euler[3].
  • nine-point circle's instance of is recorded as mathematical concept[4].
  • Leonhard Euler is named after nine-point circle[5].
  • Karl Wilhelm Feuerbach is named after nine-point circle[6].
  • nine-point circle's subclass of is recorded as triangle circles[7].
  • nine-point circle's Commons category is recorded as Nine-point circle[8].
  • nine-point circle's has part is recorded as nine-point center[9].
  • nine-point circle's Freebase ID is recorded as /m/015b_c[10].
  • nine-point circle's MathWorld ID is recorded as Nine-PointCircle[11].
  • nine-point circle's Great Norwegian Encyclopedia ID is recorded as nipunktsirkel[12].
  • nine-point circle's maintained by WikiProject is recorded as WikiProject Mathematics[13].
  • nine-point circle's Microsoft Academic ID is recorded as 198818456[14].
  • nine-point circle's Brilliant Wiki ID is recorded as nine-point-circle[15].
  • nine-point circle's ProofWiki ID is recorded as Nine_Point_Circle_Theorem[16].

Body

Works and Contributions

nine-point circle is credited with the discovery of Leonhard Euler[3].

Why It Matters

nine-point circle draws 99 Wikipedia views per month (mathematical_concept category, ranking #172 of 1,007).[2] It has Wikipedia articles in 25 language editions, a strong signal of global cultural recognition.[17] It is known by 44 alternative names across languages and contexts.[18]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [3] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . Freebase Data Dumps. wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [17] . Wikidata sitelinks. wikidata.org.
  3. [18] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). nine-point circle. Retrieved May 3, 2026, from https://4ort.xyz/entity/nine-point-circle
MLA “nine-point circle.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/nine-point-circle.
BibTeX @misc{4ortxyz_nine-point-circle_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{nine-point circle}}, year = {2026}, url = {https://4ort.xyz/entity/nine-point-circle}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): nine-point circle — https://4ort.xyz/entity/nine-point-circle (retrieved 2026-05-03)

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