U+221F Right Angle
U+221F was added to Unicode in version 1.1 (1993). It belongs to the block
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
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 

Nº  8735 
UTF8  E2 88 9F 
UTF16  22 1F 
UTF32  00 00 22 1F 
URLQuoted  %E2%88%9F 
HTML hex reference  ∟ 
Wrong windows1252 Mojibake  âˆŸ 
HTML named entity  ∟ 
alias  with (in chess notation) 
Encoding: JIS0208 (hex bytes)  AD F8 
L^{A}T_{E}X  \rightangle 
AGL: Latin5  orthogonal 
Adobe Glyph List  orthogonal 
Adobe Glyph List  rightangle 
digraph  L 
Related Characters
Elsewhere
Complete Record
Property  Value 

1.1 (1993)  
RIGHT ANGLE  
—  
Mathematical Operators  
Math Symbol  
Common  
Other Neutral  
Not Reordered  
None  


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None  
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not a number  


R 