Usually it's a long cylinder. it will have a shaft that protrudes from one end. It will also have at least one hydraulic line coming from it.
It would be on the slave cylinder, and that depends on which trans and year you have.
Check the slave cylinder. That's what usually leaks.
a can
A cylinder.
Like a cylinder with a smaller cylinder on to of it. It will be sittind sideways
a can
A soup can or pop can.
what does a vertex look like
Like a can. Of cola for instance
The cardboard tube inside a toilet roll is an example of a cylinder.
By deviding the multification of line pressure and screw dia with the crosssectional area of hydralic cylinder piston.
It looks like a can and it's like in 3d.