Right-angled
111square — Synonyms and related words: Babbitt, Little Joe, Methuselah, Middle American, Philistine, T square, aboveboard, absolutely, accommodate, accord, accordant, account with, accurate, accurately, adapt, adipose, adjust, agora, agree, agree with,… …
112Congruence (geometry) — An example of congruence. The two figures on the left are congruent, while the third is similar to them. The last figure is neither similar nor congruent to any of the others. Note that congruence …
113Pell number — In mathematics, the Pell numbers and companion Pell numbers (Pell Lucas numbers) are both sequences of integers that have been known since ancient times. They are defined by a recurrence relation similar to that for the Fibonacci numbers, and… …
114Bouchout Castle — Medieval Castle Bouchout Castle, as seen from the west. The square Donjon tower (c. 1300) is at the right …
115History of trigonometry — The history of trigonometry and of trigonometric functions may span about 4000 years.EtymologyOur modern word sine is derived from the Latin word sinus , which means bay or fold , from a mistranslation (via Arabic) of the Sanskrit word jiva ,… …
116perpendicular — Synonyms and related words: air line, axis, azimuth circle, beeline, chord, diagonal, diameter, direct line, directrix, edge, erect, great circle course, normal, orthodiagonal, orthogonal, orthometric, plumb, plunging, precipitous, radius, radius …
117sheer — Synonyms and related words: aberrancy, aberration, about ship, abrupt, absolute, absolutely, airy, all embracing, all encompassing, all out, all pervading, angle, angle off, aplomb, arduous, arrant, at right angles, avert, back and fill, bare,… …
118square — I (New American Roget s College Thesaurus) n. tetragon, quadrilateral, equilateral rectangle; block; quadrangle; plaza, court; T square; slang, misfit, fogy. See numeration, measurement, angularity, permanence. v. t. quadrate; balance, settle,… …
119Rectangle — Rec tan gle (r?k t?? g l), n. [F., fr. L. rectus right + angulus angle. See {Right}, and {Angle}.] (Geom.) A four sided figure having only right angles; a right angled parallelogram. [1913 Webster] Note: As the area of a rectangle is expressed by …
120Great Pyramid of Giza — Coordinates: 29°58′45.03″N 31°08′03.69″E / …
