BLACK UPPER LEFT TRIANGLE·U+25E4

Character Information

Code Point
U+25E4
HEX
25E4
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 97 A4
11100010 10010111 10100100
UTF16 (big Endian)
25 E4
00100101 11100100
UTF16 (little Endian)
E4 25
11100100 00100101
UTF32 (big Endian)
00 00 25 E4
00000000 00000000 00100101 11100100
UTF32 (little Endian)
E4 25 00 00
11100100 00100101 00000000 00000000
HTML Entity
◤
URI Encoded
%E2%97%A4

Description

The Unicode character U+25E4, also known as the Black Upper Left Triangle, is a symbol used primarily in typography and digital text. It serves to visually indicate the beginning of an ordered list or hierarchy, often employed in outlines, flowcharts, and mind maps. Although it doesn't hold any specific cultural or linguistic significance, its distinctive triangle shape makes it easily recognizable and commonly used across various platforms and languages. In technical contexts, the Black Upper Left Triangle is utilized to denote the hierarchical relationships between elements in a tree structure or data flow diagrams. Its utilization ensures clear communication of these structures without the need for additional explanatory text.

How to type the symbol on Windows

Hold Alt and type 9700 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+25E4. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format: 1110xxxx 10xxxxxx 10xxxxxx
    Where the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+25E4 to binary: 00100101 11100100. Those are the payload bits.

  3. Step 3: Fill in the bits to match the bit pattern:

    Obtain the final bytes by arranging the paylod bits to match the bit layout:
    11100010 10010111 10100100