understanding arrow tips in MySQL Workbench EER diagram

Cardinality and ordinalitiy:

Source: https://www.lucidchart.com/pages/ER-diagram-symbols-and-meaning

Looks like crow's foot notation, also called martin notation. You can look the terms up on google.

In addition to InfZero's answer:

The point at which the connections touch a table figure is random. It's usually the point that produces the shortest connection and is centered on a figure's side. If more than one connection go out on the same side they are evenly spread accross this side There's a special mode where you can have connections touch where columns are: