Code point
U+29E8
Glyph appearance depends on your fonts.
U+29E8
SmU+29E8 DOWN-POINTING TRIANGLE WITH LEFT HALF BLACK is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Miscellaneous Mathematical Symbols-B block.
Choose the representation you need, then copy its value.
U+29E8
10728
⧨
⧨
E2 A7 A8
29E8
000029E8
%E2%A7%A8
\u29E8
\u29E8
\u29E8
\29E8