Code point
U+299B
Glyph appearance depends on your fonts.
U+299B
SmU+299B MEASURED ANGLE OPENING LEFT 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+299B
10651
⦛
⦛
E2 A6 9B
299B
0000299B
%E2%A6%9B
\u299B
\u299B
\u299B
\299B