U+223A "∺" Geometric Proportion Unicode Character
Unicode Version 17.0
∺
U+223A "∺" Geometric Proportion is a mathematical symbol used to denote a proportional relationship between four quantities, typically expressed in the form of a:b = c:d, where the scale factor is consistent across the two pairs. This differs from the more common geometric proportion symbol "∷" (U+2237), representing the same concept of proportionality, by its rotated horizontal orientation, which is often employed in older mathematical notation or specific typographic contexts to reduce vertical space. The character belongs to the Unicode block for Mathematical Operators, facilitating its use in digital text to precisely communicate equality of ratios without ambiguity.
General Properties
| Code Point | U+223A |
| Version Added | 1.1 |
| Name | Geometric Proportion |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ∺ |
| HTML Hex Encoding | ∺ |
| UTF-8 Encoding | 0xE2 0x88 0xBA |
| UTF-16 Encoding | 0x223A |
| UTF-32 Encoding | 0x0000223A |
| C/C++/Java Escape | \u223a |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |