HTML Entity for Spherical Angle (∢)
What You'll Learn
How to display the Spherical Angle (∢) in HTML using named, hexadecimal, decimal, and CSS escape methods. This character is U+2222 (SPHERICAL ANGLE) in the Mathematical Operators block (U+2200–U+22FF)—the angle between two great circles on a sphere.
Render it with ∢, ∢, ∢, or CSS \2222. Distinct from the plane angle Angle (∠, ∠).
⚡ Quick Reference — Spherical Angle
U+2222Mathematical Operators
∢Hexadecimal reference
∢Decimal reference
∢Most readable option
Name Value
──────────── ──────────
Unicode U+2222
Hex code ∢
HTML code ∢
Named entity ∢
CSS code \2222
Meaning Spherical angle
Related U+2220 = plane angle (∠, ∠)
Block Mathematical Operators (U+2200–U+22FF)Complete HTML Example
A simple example showing ∢ using the named entity, hexadecimal code, decimal HTML code, and a CSS content escape:
<!DOCTYPE html>
<html>
<head>
<style>
#point::after{
content: "\2222";
}
</style>
</head>
<body>
<p>Spherical angle (named): ∢</p>
<p>Spherical angle (hex): ∢</p>
<p>Spherical angle (decimal): ∢</p>
<p id="point">Spherical angle (CSS): </p>
</body>
</html>🌐 Browser Support
The Spherical Angle (∢) is supported in all modern browsers when fonts include Mathematical Operators glyphs:
👀 Live Preview
See the spherical angle symbol in mathematical contexts:
🧠 How It Works
Named HTML Entity
∢ is the semantic named entity for the spherical angle—the most readable option in source HTML.
Hexadecimal Code
∢ uses Unicode hexadecimal 2222 to display ∢ in HTML markup.
Decimal HTML Code
∢ uses decimal Unicode value 8738 for the same character.
CSS Entity
\2222 is used in CSS stylesheets in the content property of pseudo-elements like ::after.
Same visual result
All four methods produce ∢. Unicode U+2222 in Mathematical Operators (U+2200–U+22FF).
Use Cases
The Spherical Angle (∢) commonly appears in:
Equations and formulas for spherical geometry and great-circle angles.
Documentation on angles between arcs on a sphere.
Research and scholarly content in mathematics and physics.
Tutorials and textbooks on spherical trigonometry.
Scientific and engineering references with precise notation.
Web-based math tools and calculators showing angle symbols.
💡 Best Practices
Do
- Use
∢for readable source markup - Distinguish ∢ (spherical) from ∠ (plane,
∠) - Add context text when the symbol stands alone in educational content
- Pick one entity style (named, hex, or decimal) per project
- Test rendering with math-friendly fonts
Don’t
- Confuse
∢(U+2222) with∠(U+2220) - Use padded Unicode notation like U+02222—the correct value is
U+2222 - Put CSS escape
\2222in HTML text nodes - Use ∢ for ordinary plane Euclidean angles
- Mix entity styles randomly in one file
Key Takeaways
Four HTML/CSS references all render ∢
∢ ∢ ∢For CSS stylesheets, use \2222 in the content property
Unicode U+2222 — SPHERICAL ANGLE (∢)
∠ is plane angle (U+2220); ∢ is spherical (U+2222)
Previous: Sparkle Next: Square Below
❓ Frequently Asked Questions
∢ (named), ∢ (hex), ∢ (decimal), or \2222 in CSS content. All four render ∢.U+2222 (SPHERICAL ANGLE). Mathematical Operators (U+2200–U+22FF). Hex 2222, decimal 8738, named ∢.∢ renders ∢ (U+2222, spherical angle on a sphere). ∠ renders ∠ (U+2220, ordinary plane angle). They are different characters.∢, ∢, or ∢) go in markup. The CSS escape \2222 is used in stylesheets, typically in the content property of ::before or ::after. Same visual result, different layers of the stack.Explore More HTML Entities!
Discover 1500+ HTML character references — math symbols, operators, and more.
About the author
8 people found this page helpful