The Upside down T symbol indicates perpendicular lines.
That's a u
Answer it
In sets it means intersects. like what is common in both sets
In mathematics, an upside down A means "for all".
You are holding your sword upside down.
Sounds highly unlikely. But did you mean 'the chicken upside down', or 'the egg upside down'?
A upside down rainbow means cheese or tacos
What does an upside down T mean
The only "mathematical" (it's really more geometrical) symbol I can think of fitting the description means "perpendicular."
IgLoo
up
pnworhd is an upside down pyramid. If you take pnworhd in script and turn in upside down you will get pyramid