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diagonal

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Merriam-Webster's Collegiate Dictionarydi·ag·o·nal I \dī-ˈa-gə-nəl, -ˈag-nəl\ adjective ETYMOLOGY Latin diagonalis, from Greek diagōnios from angle to angle, from dia- + gōnia angle; akin to Greek gony knee — more at knee DATE 15631. a. joining two vertices of a rectilinear figure that are nonadjacent or two vertices of a polyhedral figure that are not in the same face b. passing through two nonadjacent edges of a polyhedron a diagonal plane2. a. inclined obliquely from a reference line (as the vertical) wood with a diagonal grain b. having diagonal markings or parts a diagonal weave II noun DATE 15711. a diagonal straight line or plane2. a. (1) a diagonal direction (2) a diagonal row, arrangement, or pattern b. something oriented in diagonal position3. slash 4 • • •- on the diagonalEnglish Etymologydiagonal 1540s, from M.Frhttp://M.Fr. diagonal, from L. diagonalis, from diagonus"slanting line," from Gk. diagonios "from angle to angle," from dia-"across" + gonia "angle," related to gony "knee" (see knee). Related: Diagonally.Oxford Advanced Learner's Dictionary-牛津双解-OALD7diagonaldi·ag·onal / dai5A^Enl / adjective (of a straight line 直线) at an angle; joining two opposite sides of sth at an angle 斜线的；对角线的: diagonal stripes 斜纹 • di·ag·onal·ly / -nEli / adv.: Walk diagonally across the field to the far corner and then turn left. 斜着穿过这块地到拐角处,然后朝左转。 noun a straight line that joins two opposite sides of sth at an angle; a straight line that is at an angle 对角线；斜线Merriam-Webster's Collegiate Thesaurus-11th Editionn. Function: adjective between horizontal and vertical in direction FF1C;cloth with a diagonal stripeFF1E; Synonyms: bevel, beveled, bias, biased, slanted, slanting; compare INCLINED 3Webster's Third New International Dictionary, UnabridgedSearch result show the entry is found in: solar diagonal , or diagonal matrix , or principal diagonal , or diagonal biped , or diagonal bond , or diagonal bracing , or diagonal bridging , or diagonal eyepiece , or diagonal fraction , or diagonal pitch , or diagonal rib , or diagonal stratificationdi·ag·o·nalI. \(ˈ)dī|agənəl, -aig-, -g(ə)nəl, -gnəl\ adjectiveEtymology: Latin diagonalis, from Greek diagōnios from angle to angle (from dia- + -gōnios, from gōnia angle) + Latin -alis -al; akin to Greek gony knee — more at knee1. a. : joining two nonadjacent vertices of a rectilinear or polyhedral figure : running across from corner to corner b. : passing through two nonadjacent edges of a polyhedron < a diagonal plane >2. a. : inclined obliquely from a reference line (as the vertical or an axis) < wood with a diagonal grain > < a map with a number of diagonal lines > < a diagonal white cross on a blue ground > b. : having diagonal markings or parts < a diagonal weave >3. crystallog a. : having reference to certain axes of the isometric system which are the intersections between the principal and the secondary planes of symmetry b. : having reference to the directions bisecting the angles between lateral axes in the tetragonal and hexagonal systems• di·ag·o·nal·ly \-gənəl]ē, -gnəl], ]i\ adverbII. noun(-s)1. : a straight line joining any two nonadjacent vertices of a polygon or any two vertices of a polyhedron not in the same face2. a. : a diagonal direction : a diagonal row, arrangement, or pattern < water bugs skated hither and thither in apparently purposeless diagonals — S.E.White > < neckties with colorful diagonals > b. : a twill weave : a twilled fabric especially of wool c. : a line of squares running obliquely across a chessboard or checkerboard < one bishop moves along white diagonals > d. : something lying in a diagonal position (as in an inclined plane) < its gable wall rises from the falling diagonal of the ground — American Guide Series: Maryland >3. : the secondary mirror in a Newtonian reflecting telescope that is used to bring the focus to the side of the tube and is usually a flat mirror but sometimes a totally reflecting 45 degrees prism4. : the symbol / used especially to denote “or” (as in and/or), “and or” (as in straggler/deserter form), “per” (as in feet/second), “in” or “of” (as in U.S. Embassy/Paris), “shilling” (as in 6/8d), or “for” (as in 2/39) to indicate division (as in birth/death ratio) or the end of a line of verse or of a display line when quoted in running text, to separate terms of quantity (as in 5 tons/7 cwts/57 lbs) or the figures of a date (as in 1/9/56), or to enclose phonemic rather than phonetic symbols — called also oblique, scratch comma, separatrix, slant, slash, slash mark, solidus, virgule5. : an inclined member of a truss or bracing system excepting the end post of a truss and the top chord of a roof truss whose top chords are inclined

Diagonal Or Line A A From B Angle