∟
Unicode
U+221FLaTeX
\rightangleHTML entity
HTML decimal
∟MathML
<mo>∟</mo>Semantic identity and intent
Characters to distinguish
- ∠ — Angle
- ⊥ — Perpendicular
Use ∟ in the right format
Meaning and usage
Marks an angle whose measure is exactly ninety degrees.
Use it in geometric diagrams or explanations when an angle is known to be perpendicular.
Pronunciation: right angle symbol
Formula examples
\angle ABC=90^\circHow to type Right Angle Symbol
- Windows
- Use Character Map and search for Right Angle Symbol, or paste the Unicode character (U+221F).
- macOS
- Open Character Viewer with Control–Command–Space and search for Right Angle Symbol.
- Microsoft Word
- In an equation, type \rightangle and press Space when Word supports the command; otherwise insert the Unicode character.
- 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 \rightangle.
- 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+221F; for structured equations, use \rightangle in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Right Angle Symbol.
When to use ∟
- Use ∟ in plain text when a Unicode character is appropriate and the destination preserves U+221F.
- Use \rightangle in an equation editor when mathematical spacing or structure matters.
- Define the local meaning when Right Angle Symbol is used in geometry with a field-specific convention.
Look-alikes and related characters
- ∠ — Angle
- ⊥ — Perpendicular
Font and compatibility notes
Glyph shape can vary by font. Verify the code point after copying, and prefer LaTeX or MathML for structured equations.
Continue the workflow
From Right Angle Symbol to a finished equation
- Copy the characterUse ∟ in plain text when Unicode is accepted.
- Choose a structured formatUse
\rightanglefor 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: specialist
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 Angle Symbol symbol mean?
Marks an angle whose measure is exactly ninety degrees.
What is the LaTeX command for ∟?
Use \rightangle in a compatible math environment.
Can I copy ∟ as Unicode?
Yes. Use the copy button above to copy the Unicode character directly.