Home U+2200 to U+22FF Mathematical Operators

# U+221FRight Angle

U+221F was added to Unicode in version 1.1 (1993). It belongs to the block U+2200 to U+22FF Mathematical Operators in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Math Symbol and is commonly used, that is, in no specific script. The character is also known as with (in chess notation).

The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Other Neutral and is mirrored. Its corresponding mirrored glyph is Reversed Right Angle. In text U+221F behaves as Ambiguous (Alphabetic or Ideographic) regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The CLDR project labels this character “right angle” for use in screen reading software. It assigns additional tags, e.g. for search in emoji pickers: mathematics, right angle.

The Wikipedia has the following information about this codepoint:

In geometry and trigonometry, a right angle is an angle of exactly 90 degrees or π {displaystyle pi } /2 radians corresponding to a quarter turn. If a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles. The term is a calque of Latin angulus rectus; here rectus means "upright", referring to the vertical perpendicular to a horizontal base line.

Closely related and important geometrical concepts are perpendicular lines, meaning lines that form right angles at their point of intersection, and orthogonality, which is the property of forming right angles, usually applied to vectors. The presence of a right angle in a triangle is the defining factor for right triangles, making the right angle basic to trigonometry.

## Representations

System Representation
8735
UTF-8 E2 88 9F
UTF-16 22 1F
UTF-32 00 00 22 1F
URL-Quoted %E2%88%9F
HTML hex reference &#x221F;
Wrong windows-1252 Mojibake âˆŸ
HTML named entity &angrt;
alias with (in chess notation)
Encoding: JIS0208 (hex bytes) AD F8
LATEX \rightangle
AGL: Latin-5 orthogonal
Adobe Glyph List orthogonal
Adobe Glyph List rightangle
digraph -L

## Complete Record

Property Value
Age 1.1 (1993)
Unicode Name RIGHT ANGLE
Unicode 1 Name
Block Mathematical Operators
General Category Math Symbol
Script Common
Bidirectional Category Other Neutral
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Right Angle
Lowercase
Simple Lowercase Mapping Right Angle
Lowercase Mapping Right Angle
Uppercase
Simple Uppercase Mapping Right Angle
Uppercase Mapping Right Angle
Simple Titlecase Mapping Right Angle
Titlecase Mapping Right Angle
Case Folding Right Angle
ASCII Hex Digit
Alphabetic
Bidi Control
Bidi Mirrored
Composition Exclusion
Case Ignorable
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Cased
Full Composition Exclusion
Default Ignorable Code Point
Dash
Deprecated
Diacritic
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji Presentation
Emoji
Extender
Extended Pictographic
FC NFKC Closure Right Angle
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
Hyphen
ID Continue
ID Start
IDS Binary Operator
IDS Trinary Operator and
Ideographic
Indic Mantra Category
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name
Join Control
Logical Order Exception
Math
Noncharacter Code Point
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Right Angle
NFKC Quick Check Yes
NFKD Quick Check Yes
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Prepended Concatenation Mark
Pattern Syntax
Pattern White Space
Quotation Mark
Regional Indicator
Radical
Sentence Break Other
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Variation Selector
Word Break Other
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD
Bidi Mirrored Glyph Reversed Right Angle
Bidi Paired Bracket Right Angle
Bidi Paired Bracket Type None
East Asian Width Ambiguous
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Ambiguous (Alphabetic or Ideographic)
Numeric Type None
Numeric Value not a number
Simple Case Folding Right Angle
Script Extension
Vertical Orientation R