Does Ledo's sell pizza by the slice?

That would be like buying lasagna by the noodle. Each "slice" is a only a 2 inch or 3 inch square. It's in a category of its own -- best pizza in the world. My family has been going there since at least the early 60s at the original College Park location.

Not sure but call the closest location to see. Their pizza when cut is small squares.

I would call as each location is owned and operated

Yes