HTML Entity for Geometrically Equal To (≑)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+2251

What You'll Learn

How to display the Geometrically Equal To symbol (≑) in HTML using hexadecimal, decimal, named entity, and CSS escape methods. This character is U+2251 (GEOMETRICALLY EQUAL TO) in the Mathematical Operators block (U+2200–U+22FF).

Render it with ≑, ≑, ≑, or CSS escape \2251. Do not confuse ≑ with geometrically equivalent to (≎, U+224E) or ordinary equals =.

⚡ Quick Reference — Geometrically Equal To

Unicode U+2251

Mathematical Operators

Hex Code ≑

Hexadecimal reference

HTML Code ≑

Decimal reference

Named Entity ≑

Most readable option

Reference Table
Name           Value
────────────   ──────────
Unicode        U+2251
Hex code       ≑
HTML code      ≑
Named entity   ≑
CSS code       \2251
Meaning        Geometrically equal to
Not to confuse U+224E = geometrically equivalent to (≎)
1

Complete HTML Example

This example demonstrates the Geometrically Equal To symbol (≑) using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\2251";
  }
 </style>
</head>
<body>
<p>Geometrically Equal To using Hexadecimal: &#x2251;</p>
<p>Geometrically Equal To using Decimal: &#8785;</p>
<p>Geometrically Equal To using Named Entity: &eDot;</p>
<p id="point">Geometrically Equal To using CSS Entity: </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The Geometrically Equal To symbol (≑) is universally supported in modern browsers with a math-capable font:

Chrome 1+
Firefox 1+
Safari 1+
Edge 12+
Opera 4+
Android 4.4+
iOS Safari 1+

👀 Live Preview

See the Geometrically Equal To symbol (≑) in math and geometry contexts:

Inline notation △ ABC ≑ △ DEF
Large glyph
Named entity &eDot; renders as ≑
Related operators ≑ (equal) • ≎ (equivalent) • ∺ (proportional)
Numeric refs &#x2251; &#8785; &eDot; \2251

🧠 How It Works

1

Hexadecimal Code

&#x2251; uses the Unicode hexadecimal value 2251 to display the Geometrically Equal To symbol. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#8785; uses the decimal Unicode value 8785 to display the same character.

HTML markup
3

Named Entity

&eDot; is the semantic named entity for ≑—the easiest to read in source HTML and part of the HTML5 character set.

HTML markup
4

CSS Entity

\2251 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All four methods produce the glyph: . Unicode U+2251 is in Mathematical Operators (U+2200–U+22FF). Next: Geometrically Equivalent To (≎).

Use Cases

The Geometrically Equal To symbol (≑) is commonly used in:

📐 Mathematics

Notation involving geometric equality or equality by definition in geometry.

📐 Geometry

Textbooks, proofs, and content that express geometric equality between figures.

📄 Technical docs

Papers, specifications, and documentation using mathematical operators.

🎓 Education

Online courses, tutorials, and resources for math or geometry.

📚 Symbol references

HTML entity lists, Unicode charts, and math symbol documentation.

🔢 Formulas

Web pages displaying mathematical expressions with proper typography.

💡 Best Practices

Do

  • Use &eDot; for readable source markup
  • Pick one style (hex / decimal / named) per project
  • Use math fonts (e.g. Cambria Math) for reliable glyph rendering
  • Consider MathML for complex equations and accessibility
  • Serve pages with UTF-8 (<meta charset="utf-8">)

Don’t

  • Confuse ≑ (geometrically equal) with ≎ (geometrically equivalent)
  • Use ordinary = when ≑ is the intended operator
  • Put CSS escape \2251 in HTML text nodes
  • Mix entity styles randomly in one file
  • Rely on the symbol alone without context for screen readers

Key Takeaways

1

Three HTML references plus CSS all render ≑

&#x2251; &#8785; &eDot;
2

For CSS stylesheets, use the escape in the content property

\2251
3

Unicode U+2251 — GEOMETRICALLY EQUAL TO

4

Prefer &eDot; for readability in HTML source

❓ Frequently Asked Questions

Use &#x2251; (hex), &#8785; (decimal), &eDot; (named), or \2251 in CSS content. All produce ≑.
U+2251 (GEOMETRICALLY EQUAL TO). Mathematical Operators block. Hex 2251, decimal 8785. Named entity: &eDot;. Related: U+224E (≎) is geometrically equivalent to.
In mathematical and geometric notation, textbooks, proofs, and technical documentation where geometric equality is expressed.
&eDot; is the named HTML entity for ≑. It is part of the HTML5 named character set and the most readable option in source markup.
HTML entities (&eDot;, &#8785;, or &#x2251;) go in markup. The CSS escape \2251 is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.

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About the author

Mari Selvan M P
Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

  • Experience 12 years building web and cloud systems
  • Focus Full Stack Development, AWS, and Developer Education

I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

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