I have a straight line segment joining two points ($i$ and $j$). I have a third point, $k$, that has a perpendicular distance to the line segment $\kappa_{\bot}$ (call this line segment of length $\kappa_{\bot}$ "*").
What exactly is the best notation to use to describe this line segment (*)? Is there an "official" way of doing this?
It's the altitude relative to $[ij]$ in the triangle $ijk$.