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Congruence in Irish (Congruacht): Meaning, Pronunciation, Usage

The Irish for congruence is congruacht, a feminine noun.
Updated October 2026Report a mistake

How to say “congruence” in Irish

Irish:
congruacht
English:
congruence
Word type:
noun
Gender:
feminine
Pronunciation:
“KONG-groo-ukht”  /ˈkɔŋɡɾuəxt̪/
Various forms
Genitive singular:
congruachta, na congruachta (e.g. riail na congruachta, the rule of congruence)

What does “congruacht” mean?

congruence
In mathematics, the property of two figures or numbers being congruent, that is, identical in shape and size or equivalent under a modulus.Also: congruency, being congruent.

“Congruacht” with the article

Here is congruacht after the article (an t-alt).

an chongruacht
the congruence
Lenition: c becomes ch after an (feminine noun)

“Congruacht” in a sentence: Irish examples

Common Irish sentences using congruacht, the Irish word for congruence.

Is coincheap tábhachtach sa gheoiméadracht í an chongruacht.
Congruence is an important concept in geometry.
Mhínigh an múinteoir congruacht na dtriantán dúinn.
The teacher explained the congruence of triangles to us.
Cruthaigh congruacht an dá thriantán seo.
Prove the congruence of these two triangles.
Tá ceist faoi chongruacht ar an scrúdú.
There is a question on congruence in the exam.
Foghlaimímid tástálacha na congruachta i mbliana.
We are learning the congruence tests this year.
Bíonn congruacht i gceist sa teoiric uimhreacha freisin.
Congruence also comes up in number theory.
Ní thuigim fós an chongruacht i gceart.
I still don't properly understand congruence.

Other nouns in Irish

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Congruence in Irish: frequently asked questions

What is the Irish for congruence?

The Irish for congruence is congruacht (pronounced “KONG-groo-ukht”). It’s a feminine noun.

How do you pronounce congruacht in Irish?

Congruacht is said like “KONG-groo-ukht” (IPA /ˈkɔŋɡɾuəxt̪/).

Does congruacht have a plural?

No plural form is given for congruacht in the standard. Many abstract and mass nouns in Irish have no plural.

Why does congruacht change to chongruacht or gcongruacht?

Irish changes the start of some words after certain words. After mo (my) congruacht becomes mo chongruacht (lenition), and after ár (our) or i (in) it becomes ár gcongruacht (eclipsis).

What is the difference between congruacht and cosúlacht in geometry?

Congruacht means figures are identical in shape and size, while cosúlacht (similarity) means they have the same shape but possibly different sizes.

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