PLUS SIGN WITH BLACK TRIANGLE U+2A28

BlockSupplemental Mathematical Operators
CategoryMath Symbol
UTF-80xE2 0xA8 0xA8
UTF-160xFF 0xFE 0x28 0x2A
UTF-320xFF 0xFE 0x0 0x0 0x28 0x2A 0x0 0x0
HTML⨨
Pythonu"\u2A28"