MINUS SIGN IN TRIANGLE·U+2A3A

Character Information

Code Point
U+2A3A
HEX
2A3A
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 A8 BA
11100010 10101000 10111010
UTF16 (big Endian)
2A 3A
00101010 00111010
UTF16 (little Endian)
3A 2A
00111010 00101010
UTF32 (big Endian)
00 00 2A 3A
00000000 00000000 00101010 00111010
UTF32 (little Endian)
3A 2A 00 00
00111010 00101010 00000000 00000000
HTML Entity
⨺
URI Encoded
%E2%A8%BA

Description

The Unicode character U+2A3A, known as the MINUS SIGN IN TRIANGLE (−△), is a mathematical symbol used in digital text to denote both subtraction and a geometric figure. This unique symbol combines two fundamental mathematical concepts - subtraction and the triangle, which are essential for various calculations and geometrical representations in science, engineering, and mathematics. The MINUS SIGN IN TRIANGLE is particularly useful in contexts where visual differentiation of negative numbers or mathematical operations is crucial, such as in computer programming, scientific notation, and technical documentation. Although its usage is not widespread due to potential readability issues, the MINUS SIGN IN TRIANGLE contributes to a more expressive typography for those who appreciate its distinctiveness.

How to type the symbol on Windows

Hold Alt and type 10810 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+2A3A. 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+2A3A to binary: 00101010 00111010. 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 10101000 10111010