Perpendicular

square rigged upright fall home crosspiece peritropal rake sheer angle of refraction trip birefringence t bone substyle english bermuda seam perpend poincaré disk line of force ultraparallel transvection helix hoe normal force crank antiplane longshore flank plumb kathetal breakwater foredraft trench bullet bra circle of gorge transverse wave fasciation quarter dragonfly perpendicularly vertical angle of reflection longitude tailsitter four dimensional pervalvar sphaera recta plane apothem peak anticlinal hockey stop perpendicularity line perpendiculars picket fence paraboloid level q wave billboarding t square maltitude skew crossbeam love wave palet orthocentric planetographic diatropism fleming's right hand rule underlayer pad stitch hall effect oloid cross bench cross aplomb pretilt hook tonfa riddle stick right depth steep bialtitude device horizontal angle grinder gyrophase mediatrix gothic perpendicularness pedal curve architecture focal plane magnetosonic lissajous figure crossrange century plumpendicular return evendown normal right angle wall sided point x mark equatorial canton side wall monoclinic crosshairs return crease oblique fire thatch rake k value virchow's law plumb line cross garnet orthogonal style hoist column