Code point
U+299D
Glyph appearance depends on your fonts.
U+299D
SmU+299D MEASURED RIGHT ANGLE WITH DOT 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+299D
10653
⦝
⦝
⦝
E2 A6 9D
299D
0000299D
%E2%A6%9D
\u299D
\u299D
\u299D
\299D