• 39 congruence signs

Congruent Symbol Copy and Paste

Copy ≅ for congruent figures, ≡ for congruent numbers, or the struck-through ≇ and ≢, each with its codes.

Congruent Symbol Copy and Paste

≅Approximately equal toU+2245Ready to copy

39 congruence signs. Tap any value to copy it.

39 congruence signs. A character and its name both copy the character. A code copies the code.
CharacterNameCode pointAlt codeOption keysHTMLLaTeX
U+2245. The sign commonly used for congruent figures: an equals sign under a tilde. Unicode names it Approximately equal to. ≅ in HTML, \cong in LaTeX. No Alt code.
U+2261. The triple bar. The sign of congruence between numbers, as in 15 ≡ 3 (mod 12), and sometimes used for congruent figures. Alt+240 on a number pad, or Compose then = then _. HTML also calls it ≡.
U+2247. Not congruent: ≅ struck through. \ncong in LaTeX needs amssymb, ≇ in HTML.
U+2262. Not identical: the triple bar struck through. ≢ in HTML.
U+224C. The mirror form: the tilde is reversed. All equal to is its Unicode name. The entity is ≌.
U+2A6D. The one character with congruent in its Unicode name: ≅ with a dot over it. The entity is ⩭. Added in Unicode 3.2 (2002).
U+223C. The tilde alone. One of its Unicode notes is similar to: the same shape, as ≅ without the bars of the same size. \sim in LaTeX.
U+2248. Almost equal to: two wavy lines, for a rounded number. Alt+247 on a number pad, Option+X on the U.S. layout. \approx in LaTeX.

Next step ∠ and the other angle signsAlt+240 next to every other Alt code

How it works

The congruent symbol is ≅: an equals sign under a tilde, U+2245, which Unicode names Approximately equal to. Here to copy and paste with it: ≡, the sign for congruent numbers, and the struck-through ≇ and ≢.

Read the full guide

Two signs are read as congruent

In geometry ≅ says that two figures have the same shape and size. In the UK the triple bar ≡ sometimes serves for that. Between numbers ≡ is the sign: 15 ≡ 3 (mod 12) reads 15 is congruent to 3 modulo 12, as on a clock face.

The names do not say congruent

Unicode calls ≡ Identical to. One character has the word in its name: ⩭, Congruent with dot above. HTML comes closer: ≅ is ≅, and ≡ is ≡.

  • In LaTeX, \cong is ≅ and \equiv is ≡, with no package. \ncong, for ≇, needs amssymb.
  • ∼ alone says similar, the same shape. ≅ sets it over the two bars of the equals sign: the same shape and the same size.

Questions and answers

What is the symbol for congruent?

≅, U+2245: an equals sign under a tilde, the sign commonly used for congruent figures. Its Unicode name is Approximately equal to, so a search for congruent in a character list misses it.

How do I type the congruent sign?

≅ has no key and no Alt code: in HTML write ≅, and in LaTeX \cong. ≡ is Alt+240 on a number pad, ≡ in HTML and \equiv in LaTeX. With a Compose key, Compose, =, _ types ≡.

What is the difference between ≅ and ≡?

≅ is the usual sign for congruent figures. ≡, the triple bar, is the sign for congruence between numbers, as in 15 ≡ 3 (mod 12), and it has other meanings of equivalence. In the UK it is sometimes used for figures too.

What is the not congruent symbol?

≇, U+2247, which Unicode names Neither approximately nor actually equal to: ≇ in HTML and \ncong in LaTeX. ≢, Not identical to, U+2262, is the triple bar with a slash through it.

All 39 congruence signs

Start here 8

  • All equal to U+224C. The mirror form: the tilde is reversed. All equal to is its Unicode name. The entity is ≌.
  • Almost equal to U+2248. Almost equal to: two wavy lines, for a rounded number. Alt+247 on a number pad, Option+X on the U.S. layout. \approx in LaTeX.
  • Approximately equal to U+2245. The sign commonly used for congruent figures: an equals sign under a tilde. Unicode names it Approximately equal to. ≅ in HTML, \cong in LaTeX. No Alt code.
  • Congruent with dot above U+2A6D. The one character with congruent in its Unicode name: ≅ with a dot over it. The entity is ⩭. Added in Unicode 3.2 (2002).
  • Identical to U+2261. The triple bar. The sign of congruence between numbers, as in 15 ≡ 3 (mod 12), and sometimes used for congruent figures. Alt+240 on a number pad, or Compose then = then _. HTML also calls it ≡.
  • Neither approximately nor actually equal to U+2247. Not congruent: ≅ struck through. \ncong in LaTeX needs amssymb, ≇ in HTML.
  • Not identical to U+2262. Not identical: the triple bar struck through. ≢ in HTML.
  • Tilde operator U+223C. The tilde alone. One of its Unicode notes is similar to: the same shape, as ≅ without the bars of the same size. \sim in LaTeX.
Show all 39 congruence signs (31 more)

Congruent and not congruent 3

  • Approximately but not actually equal to U+2246. Approximately but not actually equal to: both bars are struck. The entity is ≆.
  • Approximately equal or equal to U+2A70. Two wavy lines over an equals sign. The entity is ⩰. Added in Unicode 3.2 (2002).
  • Reversed tilde equals U+22CD. A reversed tilde over one bar. \backsimeq in LaTeX needs amssymb. The entity is ⋍.

Identical and equivalent 6

  • Equivalent to U+224D. Equivalent to: two arcs that face each other. \asymp in LaTeX. The entity is ≍.
  • Equivalent with four dots above U+2A78. The triple bar with four dots over it. The entity is ⩸. Added in Unicode 3.2 (2002).
  • Geometrically equivalent to U+224E. Geometrically equivalent to: an equals sign with a bump on each bar. \Bumpeq in LaTeX needs amssymb. The entity is ≎.
  • Identical to and slanted parallel U+29E5. The triple bar crossed by two slanted strokes. The entity is ⧥. Added in Unicode 3.2 (2002).
  • Identical with dot above U+2A67. The triple bar with a dot over it. No named entity. Added in Unicode 3.2 (2002).
  • Strictly equivalent to U+2263. Four bars: strictly equivalent to. No named entity and no macro.

Similar and roughly equal 10

  • Almost equal or equal to U+224A. Two wavy lines over one bar: almost equal or equal to. \approxeq in LaTeX needs amssymb. The entity is ≊.
  • Asymptotically equal to U+2243. A tilde over one bar: asymptotically equal to. \simeq in LaTeX. The entity is ≃.
  • Equals sign above tilde operator U+2A73. An equals sign over a tilde: the parts of ≅ the other way up. The entity is ⩳. Added in Unicode 3.2 (2002).
  • Minus tilde U+2242. A bar over a tilde: the parts of ≃ the other way up. \eqsim in LaTeX needs amssymb. The entity is ≂.
  • Not almost equal to U+2249. Not almost equal to: ≈ struck through. The entity is ≉.
  • Not asymptotically equal to U+2244. The same sign struck through. The entity is ≄.
  • Not tilde U+2241. Not similar: the tilde struck through. \nsim in LaTeX needs amssymb. The entity is ≁.
  • Reversed tilde U+223D. The tilde reversed. Unicode's other name for it: lazy S. \backsim in LaTeX needs amssymb. The entity is ∽.
  • Tilde operator with dot above U+2A6A. The tilde with a dot over it. The entity is ⩪. Added in Unicode 3.2 (2002).
  • Triple tilde U+224B. Three wavy lines. The entity is ≋.

Ready-made 4

  • A not congruent to B Made of A, U+2247 and B: A is not congruent to B.
  • A similar to B Made of A, U+223C and B: A is similar to B.
  • Figure A congruent to figure B Made of A, U+2245 and B, with no spaces: A is congruent to B.
  • Small a congruent to small b Made of a, U+2261 and b: the start of a congruence between numbers, before the modulus in brackets.

Look-alikes with another meaning 8

  • Approaches the limit U+2250. An equals sign with a dot above. Approaches the limit is its Unicode name. \doteq in LaTeX. The entity is ≐.
  • Delta equal to U+225C. An equals sign under a triangle. Unicode's other names for it: equiangular, and equal to by definition. \triangleq in LaTeX needs amssymb. The entity is ≜.
  • Equals sign U+003D. The equals sign, already on your keyboard: equal, with no tilde and no third bar. The entity is =.
  • Equiangular to U+225A. An equals sign under a small v. Equiangular to is its Unicode name. The entity is ≚.
  • Estimates U+2259. An equals sign under a wedge. Estimates is its Unicode name, and Unicode's other name for it is corresponds to. The entity is ≙.
  • Geometrically equal to U+2251. An equals sign with a dot above and below. Geometrically equal to is its Unicode name. \Doteq in LaTeX needs amssymb. The entity is ≑.
  • Questioned equal to U+225F. An equals sign under a question mark. Questioned equal to is its Unicode name. The entity is ≟.
  • Ring equal to U+2257. An equals sign under a small ring. Ring equal to is its Unicode name. \circeq in LaTeX needs amssymb. The entity is ≗.

How this list was compiled: Names, and the code points they belong to, are checked against UnicodeData.txt, version 18.0.0 (https://www.unicode.org/Public/18.0.0/ucd/UnicodeData.txt), and printed in sentence case. Notes that begin Unicode's note quote NamesList.txt of the same version (https://www.unicode.org/Public/18.0.0/ucd/NamesList.txt); the version a character was added in is from DerivedAge.txt (https://www.unicode.org/Public/18.0.0/ucd/DerivedAge.txt), block names are from Blocks.txt, and the years are from https://www.unicode.org/history/publicationdates.html. Alt codes are from the code page 437 table (https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/PC/CP437.TXT), the PC graphics table for codes 1 to 31 (https://www.unicode.org/Public/MAPPINGS/VENDORS/MISC/IBMGRAPH.TXT) and the code page 1252 table (https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT). Option keys are those of the U.S. keyboard layout as CLDR records it (https://github.com/unicode-org/cldr/blob/release-42/keyboards/osx/en-t-k0-osx.xml); other layouts differ. HTML entity names are from https://html.spec.whatwg.org/entities.json. LaTeX macros are listed only when LaTeX's own fontdef.dtx, ltoutenc.dtx or utf8ienc.dtx (https://github.com/latex3/latex2e/tree/develop/base) or the amssymb source (https://ctan.org/pkg/amsfonts) defines them, matched to a code point through unicode-math-table.tex (https://github.com/latex3/unicode-math). Compose sequences are from the X.org en_US.UTF-8 Compose file (https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/master/nls/en_US.UTF-8/Compose.pre). Which sign geometry uses for congruent figures and where the triple bar is used for them: https://en.wikipedia.org/wiki/Congruence_(geometry). The triple bar as the sign of congruence between numbers, with the clock example: https://en.wikipedia.org/wiki/Modular_arithmetic and https://en.wikipedia.org/wiki/Triple_bar. What similar means: https://en.wikipedia.org/wiki/Similarity_(geometry). All read as wikitext on 2026-10-01 and restated in this site's own words; every other row says what its Unicode name or alias says. The Start here group, the made rows and the order are this site's own choice. Licence: own work (facts from the Unicode Character Database, Unicode License v3, and from Wikipedia, CC BY-SA 4.0, restated in this site's own words; aliases and notes marked as Unicode's are quoted from NamesList.txt, Copyright © 1991-2026 Unicode, Inc., https://www.unicode.org/license.txt)

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