LOWER RIGHT TRIANGLE U+25FF

BlockGeometric Shapes
CategoryMath Symbol
UTF-80xE2 0x97 0xBF
UTF-160xFF 0xFE 0xFF 0x25
UTF-320xFF 0xFE 0x0 0x0 0xFF 0x25 0x0 0x0
HTML◿
Pythonu"\u25FF"