What is another word for "perpendicular"?

Roget's Thesaurus (1911) lists these synonyms for "perpendicular": alongside, angle, angles, ant, azimuth, bolt, circle, cliff, cock, coextension, coextensive, correlation, elevation, end, endwise, equidistance, equidistant, erect, erection, erectness, have, intersect, its, laterally, line, normal, one, orthogonal, parallel, parallelism, perpendicularity, plumb, plummet, precipice, raise, rampant, rear, rectangular, render, right.