A simple red flag emoji attached to a post or stick, similar in style to the flag in hole symbol, which suggests that this emoji has golf connotations. The red flag is also commonly known as the triangular flag due to the shape.
The triangular flag emoji was introduced in 2010 and released as part of the Unicode 11.0 standard. This emoji can be found under the flags
category. Because the triangular flag emoji has been around for quite some time, it should display correctly in the majority of operating systems.