Home: go to the homepage U+2980 to U+29FF Miscellaneous Mathematical Symbols-B
Glyph for U+29B9
Source: Noto Sans Math

U+29B9 Circled Perpendicular

U+29B9 was added to Unicode in version 3.2 (2002). It belongs to the block U+2980 to U+29FF Miscellaneous Mathematical Symbols-B 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 glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+29B9 behaves as Alphabetic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

In elementary geometry, two geometric objects are perpendicular if their intersection forms right angles (angles that are 90 degrees or π/2 radians wide) at the point of intersection called a foot. The condition of perpendicularity may be represented graphically using the perpendicular symbol, ⟂. Perpendicular intersections can happen between two lines (or two line segments), between a line and a plane, and between two planes.

Perpendicularity is one particular instance of the more general mathematical concept of orthogonality; perpendicularity is the orthogonality of classical geometric objects. Thus, in advanced mathematics, the word "perpendicular" is sometimes used to describe much more complicated geometric orthogonality conditions, such as that between a surface and its normal vector.

A line is said to be perpendicular to another line if the two lines intersect at a right angle. Explicitly, a first line is perpendicular to a second line if (1) the two lines meet; and (2) at the point of intersection the straight angle on one side of the first line is cut by the second line into two congruent angles. Perpendicularity can be shown to be symmetric, meaning if a first line is perpendicular to a second line, then the second line is also perpendicular to the first. For this reason, we may speak of two lines as being perpendicular (to each other) without specifying an order. A great example of perpendicularity can be seen in any compass, note the cardinal points; North, East, South, West (NESW) The line N-S is perpendicular to the line W-E and the angles N-E, E-S, S-W and W-N are all 90° to one another.

Perpendicularity easily extends to segments and rays. For example, a line segment A B ¯ {displaystyle {overline {AB}}} is perpendicular to a line segment C D ¯ {displaystyle {overline {CD}}} if, when each is extended in both directions to form an infinite line, these two resulting lines are perpendicular in the sense above. In symbols, A B ¯ ⊥ C D ¯ {displaystyle {overline {AB}}perp {overline {CD}}} means line segment AB is perpendicular to line segment CD.

A line is said to be perpendicular to a plane if it is perpendicular to every line in the plane that it intersects. This definition depends on the definition of perpendicularity between lines.

Two planes in space are said to be perpendicular if the dihedral angle at which they meet is a right angle.

Representations

System Representation
10681
UTF-8 E2 A6 B9
UTF-16 29 B9
UTF-32 00 00 29 B9
URL-Quoted %E2%A6%B9
HTML hex reference ⦹
Wrong windows-1252 Mojibake ⦹
HTML named entity ⦹

Elsewhere

Complete Record

Property Value
Age 3.2 (2002)
Unicode Name CIRCLED PERPENDICULAR
Unicode 1 Name
Block Miscellaneous Symbols
General Category Math Symbol
Script Common
Bidirectional Category Other Neutral
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+29B9 Circled Perpendicular
Lowercase
Simple Lowercase Mapping Glyph for U+29B9 Circled Perpendicular
Lowercase Mapping Glyph for U+29B9 Circled Perpendicular
Uppercase
Simple Uppercase Mapping Glyph for U+29B9 Circled Perpendicular
Uppercase Mapping Glyph for U+29B9 Circled Perpendicular
Simple Titlecase Mapping Glyph for U+29B9 Circled Perpendicular
Titlecase Mapping Glyph for U+29B9 Circled Perpendicular
Case Folding Glyph for U+29B9 Circled Perpendicular
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 Glyph for U+29B9 Circled Perpendicular
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
Hyphen
ID Continue
ID Start
IDS Binary Operator
IDS Trinary Operator and
IDSU 0
ID_Compat_Math_Continue 0
ID_Compat_Math_Start 0
Ideographic
InCB None
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 Glyph for U+29B9 Circled Perpendicular
NFKC Quick Check Yes
NFKC_SCF Glyph for U+29B9 Circled Perpendicular
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 Paired Bracket Glyph for U+29B9 Circled Perpendicular
Bidi Paired Bracket Type None
East Asian Width Neutral
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Alphabetic
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+29B9 Circled Perpendicular
Script Extension
Vertical Orientation R