S: (adj) oblique (slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled) "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base"
W: (adj) parallel [Indirect via oblique] (being everywhere equidistant and not intersecting) "parallel lines never converge"; "concentric circles are parallel"; "dancers in two parallel rows"
W: (adj) perpendicular [Indirect via oblique] (intersecting at or forming right angles) "the axes are perpendicular to each other"
W: (adj) oblique (slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled) "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base"
W: (adj) parallel (being everywhere equidistant and not intersecting) "parallel lines never converge"; "concentric circles are parallel"; "dancers in two parallel rows"
S: (n) plumb line, perpendicular (a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point)
S: (adj) perpendicular (intersecting at or forming right angles) "the axes are perpendicular to each other"
S: (adj) vertical, perpendicular (at right angles to the plane of the horizon or a base line) "a vertical camera angle"; "the monument consists of two vertical pillars supporting a horizontal slab"; "measure the perpendicular height"
S: (adj) perpendicular (so steep as to be nearly veritcal) "the great perpendicular face of the cliff"