The prefix trans means across. A transversal cuts through to lines and two points.
The prefix in mean not like insane = not sane
suffix.
The following prefixes have similar meanings: Ex- can mean out, Out- can mean away from, Ab- or Abs- can mean away or from.
Well, use the word "indestructable," for example. That means "not destructable," therefore, the prefix -in usually means "not".