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congruence

when two figures or objects in geometry have the same shape and size, or if one has the same shape and size as the mirror image of the other
Thing general Q154210
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Summary

congruence ranks in the top 2% of general entities by monthly Wikipedia readership (2,463 views/month).[1]

Key Facts

  • Subclass of: relation[2], concept[3]
  • Commons category: Congruence[4]
  • Unicode character: ≅[5]
  • Notation: ≅[6]
  • Described by source: ISO 80000-2:2019 Quantities and units — Part 2: Mathematics[7], Encyclopædia Britannica 11th edition[8], Great Soviet Encyclopedia (1926–1947)[9]
  • Studied by: geometry[10]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[11]
  • Maintained by WikiProject: WikiProject Mathematics[12]

Why It Matters

congruence has Wikipedia articles in 27 language editions, a strong signal of global cultural recognition.[13] congruence is known by 41 alternative names across languages and contexts.[14]

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [13] ↑ . Wikidata sitelinks. wikidata.org.
  3. [14] ↑ . 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). congruence. Retrieved October 11, 2026, from https://4ort.xyz/entity/congruence
MLA “congruence.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Oct. 2026, https://4ort.xyz/entity/congruence.
BibTeX @misc{4ortxyz_congruence_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{congruence}}, year = {2026}, url = {https://4ort.xyz/entity/congruence}, note = {Accessed: 2026-10-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): congruence — https://4ort.xyz/entity/congruence (retrieved 2026-10-11)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 8w ago · A876 · 2026-08-17 view diff on Wikidata ↗
    Described by source → ISO 80000-2:2019 Quantities and units — Part 2: Mathematics, Encyclopædia Britannica 11th edition, Great Soviet Encyclopedia (1926–1947)
    Subclass of → —
    Studied by → geometry
    Maintained by wikiproject → WikiProject Mathematics
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1|1 */ Yale lux id: concept/f7e92d8e-ad2c-449c-9226-9baf53a895ab"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.