U+22BF\vartriangle⊿⊿<mo>⊿</mo>Semantic identity and intent
Characters to distinguish
- ∟ — Right Angle Symbol
Use ⊿ in the right format
Meaning and usage
Marks a right-triangle figure or a triangle-related operation in specialized notation.
For ordinary geometry, label the right angle explicitly if the symbol alone may be unclear.
Pronunciation: right triangle
Formula examples
⊿ABCHow to type Right Triangle
- Windows
- Use Character Map or enter U+22BF in a Unicode-aware application.
- macOS
- Open Character Viewer with Control–Command–Space and search by the symbol name.
- Microsoft Word
- In an equation, type \vartriangle and press Space when Word supports the command.
- iPhone and iPad
- Copy and paste ⊿, or use a math/LaTeX app. The standard iOS keyboard may not expose every mathematical symbol.
- Android
- Copy and paste ⊿, or use a math keyboard or LaTeX editor. Keyboard layouts vary by device and app.
- Google Docs
- For plain text, paste ⊿ or use Insert → Special characters. For structured math, use the equation editor and verify \vartriangle.
- Excel
- Paste ⊿ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.
Common mistakes
- Preserve the orientation and decoration of ⊿; in geometry a rotated, barred, or marked symbol can represent a different relation or object.
- For plain text, copy ⊿ as U+22BF; for structured equations, use \vartriangle in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Right Triangle.
When to use ⊿
- Use ⊿ in plain text when a Unicode character is appropriate and the destination preserves U+22BF.
- Use \vartriangle in an equation editor when mathematical spacing or structure matters.
- Define the local meaning when Right Triangle is used in geometry, trigonometry with a field-specific convention.
Look-alikes and related characters
- ∟ — Right Angle Symbol
Font and compatibility notes
Font coverage varies; verify the code point and destination rendering before publication.
Continue the workflow
From Right Triangle to a finished equation
- Copy the characterUse ⊿ in plain text when Unicode is accepted.
- Choose a structured formatUse
\vartrianglefor LaTeX or the MathML snippet for accessible web equations. - Edit or convertOpen the value in the editor or converter without retyping it.
Review and source notes
Quality tier: catalog
Last reviewed: 2026-07-23
Review method: Catalog review of character identity and notation mappings.
Verified against: Unicode Standard, Unicode mathematical notation guidance, and established LaTeX/MathML syntax.
Reference sources
- The Unicode StandardUnicode Consortium — Character identity, encoding, names, and conformance.
- Unicode Character Code ChartsUnicode Consortium — Code points and official character charts.
Frequently asked questions
What does the Right Triangle symbol mean?
Marks a right-triangle figure or a triangle-related operation in specialized notation.
What is the LaTeX command for ⊿?
Use \vartriangle in a compatible math environment.
Can I copy ⊿ as Unicode?
Yes. Use the copy button above to copy the Unicode character directly.