perpendiculars
Lines meeting orthogonally
Perpendiculars are lines or planes that meet at right angles.
In geometry, two perpendiculars form a 90-degree intersection.
The term extends to any vertical or upright elements: The perpendiculars of the fence posts needed straightening.
In nautical contexts, perpendiculars are vertical reference lines at a ship's bow and stern used for measuring hull length.
At right angles groundward
- right angleExactly ninety degrees
- orthogonalAt right angles
- normalConforming to standard
- plumb lineTool showing true vertical
altitude · intersection · coordinate axis · transversal · bisector · tangent · hypotenuse · baseline
Vertical or morally sound
- columnVertical structural element
- pillarUpright architectural support
- postVertical structural beam
- mullionVertical window bar
stanchion · buttress · pier · support · strut · load-bearing · crossbar · jamb
Weighted vertical indicator
- depth measurementAssessing vertical distance downward
- riggingRopes controlling ship sails
- shipwrightVessel construction craftsman
- dry dockDrained vessel repair enclosure
vertical
At right angles groundward
- right angleExactly ninety degrees
- orthogonalAt right angles
- normalConforming to standard
plumb line · altitude · intersection · coordinate axis · transversal · bisector · tangent · hypotenuse · baseline · apex
upright
Vertical or morally sound
mullion · stanchion · buttress · pier · support · strut · load-bearing · crossbar · jamb · doorframe
plumb bob
Weighted vertical indicator
- depth measurementAssessing vertical distance downward
- riggingRopes controlling ship sails
- shipwrightVessel construction craftsman
- draftingblueprint, blueprints, technical drawings, dimensions, engineering drawing
- geometryangles, circles, angle, shapes, lines
perpendicularsparallels
Points of similarity
parallel lines · horizontal lines · obliques · diagonals · asymptotes
- perpendicular styleApproach featuring upright elements
- perpendicular parkingSpaces at ninety degrees