⊤
Symbol  Format  Data 

⊤  Code Point 
U+22A4 
TeX 
\top 

SVG 
Raised interpolation marker
In geometry, the perpendicular symbol is used to show that two lines are perpendicular to each other. Visually, the symbol is made up of two lines that form a perpendicular angle.
The left tack symbol.
The right tack symbol.