HTML Entity for Approximately Equal To (≅)
What You'll Learn
How to display APPROXIMATELY EQUAL TO (≅, U+2245) in HTML. Unicode gives this code point that official name; many curricula also read the glyph as congruent to (especially in triangle congruence). Always match the symbol to the definition in your textbook or style guide—it is not the same as “almost equal” (U+2248, ≈) or “identical to” (U+2261, ≡).
In HTML you can write ≅ (named), ≅, ≅, or \2245 in CSS content. The character lives in the Mathematical Operators block; use a math-friendly font stack for clear tilde and double-bar alignment.
⚡ Quick Reference — Approximately Equal To
U+2245Mathematical Operators
≅Hexadecimal reference
≅Decimal reference
≅HTML lists as “congruent”
\2245Use in CSS content
Name Value
──────────── ──────────
Unicode U+2245
Hex code ≅
HTML code ≅
Named entity ≅
CSS code \2245Complete HTML Example
This example shows U+2245 using hexadecimal code, decimal code, the cong named reference, and a CSS content escape:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\2245";
}
</style>
</head>
<body>
<p>Approximately Equal To using Hexa Decimal: ≅</p>
<p>Approximately Equal To using HTML Code: ≅</p>
<p>Approximately Equal To using HTML Entity: ≅</p>
<p id="point">Approximately Equal To using CSS Entity: </p>
</body>
</html>The named entity is written as ≅ so it displays as copyable ≅ in this listing without being parsed by the surrounding page.
🌐 Browser Support
The cong named reference and numeric forms for U+2245 are supported in all modern browsers. Use fonts with good Mathematical Operators coverage for equations:
👀 Live Preview
Short comparisons (notation is illustrative; use MathML or TeX for publication layout):
≅ in UTF-8 HTML.🧠 How It Works
Named entity
≅ (ampersand + cong + semicolon) resolves to U+2245 in HTML5 named character references (often glossed “congruent to” in entity lists).
Hexadecimal code
≅ uses the Unicode hexadecimal value 2245.
Decimal HTML code
≅ is the decimal equivalent (877310 = 224516).
CSS escape
\2245 in content emits U+2245 from a stylesheet.
Same visual result
All paths expose U+2245 — APPROXIMATELY EQUAL TO. Prefer ≅ in hand-written markup when readability matters.
Use Cases
Use U+2245 when your notation standard explicitly calls for this relation (define in words for non-expert readers):
Approximate equality or isomorphism-flavored relations in line with your text’s conventions.
Congruent-triangle notation when your curriculum maps that meaning to U+2245.
HTML quizzes and glossaries that contrast ≅, ≈, and ≡.
Toolbars that emit ≅ for portable congruence-style glyphs.
README or spec prose that stays in Unicode HTML without a full math stack.
Tables that map each operator to its spoken description.
Add text like “approximately equal to” or “congruent to” per context.
💡 Best Practices
Do
- Prefer
≅or one numeric style consistently within a document - Use math fonts or stacks known for Mathematical Operators coverage
- Pair the glyph with plain-language explanation on first use
- Use
\2245only inside CSScontent, not HTML text - For serious equations, add MathML or KaTeX/MathJax alongside entities
Don’t
- Confuse
U+2245withU+2248(almost equal) orU+2261(identical to) - Assume every region’s school geometry uses ≅ for the same relation as your source
- Use HTML entities inside JavaScript strings (use
\u2245there instead) - Rely on the bare symbol alone in assessments without a verbal definition
Key Takeaways
Named + numeric ways to write U+2245
≅ ≅ ≅CSS content escape
\2245Unicode U+2245 — APPROXIMATELY EQUAL TO
HTML named reference ≅ maps to this code point
Mathematical Operators — not the same as ≈ or ≡
❓ Frequently Asked Questions
≅ (named), ≅ (hex), ≅ (decimal), or \2245 in CSS content. All render ≅.U+2245 (decimal 8773). HTML’s entity list labels the same character ≅ (“congruent to”).≅, ≅, and ≅ are alternative spellings of the same code point in modern browsers.≅, ≅, or ≅ in HTML. CSS uses backslash hex escapes inside content rules. Same glyph, different syntax layer.Explore More HTML Entities!
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