I wanted a straight-line distance. When I was calculating near distance on Arc GIS, I was only given the option between planar and geodesic distance.
But people in my field keep referring to my straight line distance as Euclidean.
I understand that planar is the default for my coordinate system (I think), and that it ignores surface curvature (which I wanted to ignore).
I am just worried that I calculated the wrong type of distance, but Euclidean was never an option in Arc GIS.