in a perpendicular manner

being everywhere equidistant and not intersecting

slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled

the quality of being at right angles to a given line or plane (especially the plane of the horizon)

the relation of opposition between things at right angles

a straight line at right angles to another line

forming a right angle

having a set of mutually perpendicular axes; meeting at right angles

having the axis perpendicular to the base