Adjacent Words

oblique angle definitions

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WordNet (r) 3.0 (2005)

n
1: an angle that is not a right angle or a multiple of a right angle [ant: right angle]

Merriam Webster's

noun Date: 1688 an acute or obtuse angle

Webster's 1913 Dictionary

Oblique Ob*lique", a. [F., fr. L. obliquus; ob (see Ob-) + liquis oblique; cf. licinus bent upward, Gr ? slanting.] [Written also oblike.] 1. Not erect or perpendicular; neither parallel to, nor at right angles from, the base; slanting; inclined. It has a direction oblique to that of the former motion. --Cheyne. 2. Not straightforward; indirect; obscure; hence, disingenuous; underhand; perverse; sinister. The love we bear our friends . . . Hath in it certain oblique ends. --Drayton. This mode of oblique research, when a more direct one is denied, we find to be the only one in our power. --De Quincey. Then would be closed the restless, oblique eye. That looks for evil, like a treacherous spy. --Wordworth. 3. Not direct in descent; not following the line of father and son; collateral. His natural affection in a direct line was strong, in an oblique but weak. --Baker. Oblique angle, Oblique ascension, etc. See under Angle,Ascension, etc. Oblique arch (Arch.), an arch whose jambs are not at right angles with the face, and whose intrados is in consequence askew. Oblique bridge, a skew bridge. See under Bridge, n. Oblique case (Gram.), any case except the nominative. See Case, n. Oblique circle (Projection), a circle whose plane is oblique to the axis of the primitive plane. Oblique fire (Mil.), a fire the direction of which is not perpendicular to the line fired at. Oblique flank (Fort.), that part of the curtain whence the fire of the opposite bastion may be discovered. --Wilhelm. Oblique leaf. (Bot.) (a) A leaf twisted or inclined from the normal position. (b) A leaf having one half different from the other. Oblique line (Geom.), a line that, meeting or tending to meet another, makes oblique angles with it. Oblique motion (Mus.), a kind of motion or progression in which one part ascends or descends, while the other prolongs or repeats the same tone, as in the accompanying example.

Webster's 1913 Dictionary

Angle An"gle ([a^][ng]"g'l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. 'agky`los bent, crooked, angular, 'a`gkos a bend or hollow, AS. angel hook, fish-hook, G. angel, and F. anchor.] 1. The inclosed space near the point where two lines meet; a corner; a nook. Into the utmost angle of the world. --Spenser. To search the tenderest angles of the heart. --Milton. 2. (Geom.) (a) The figure made by. two lines which meet. (b) The difference of direction of two lines. In the lines meet, the point of meeting is the vertex of the angle. 3. A projecting or sharp corner; an angular fragment. Though but an angle reached him of the stone. --Dryden. 4. (Astrol.) A name given to four of the twelve astrological ``houses.'' [Obs.] --Chaucer. 5. [AS. angel.] A fishhook; tackle for catching fish, consisting of a line, hook, and bait, with or without a rod. Give me mine angle: we 'll to the river there. --Shak. A fisher next his trembling angle bears. --Pope. Acute angle, one less than a right angle, or less than 90[deg]. Adjacent or Contiguous angles, such as have one leg common to both angles. Alternate angles. See Alternate. Angle bar. (a) (Carp.) An upright bar at the angle where two faces of a polygonal or bay window meet. --Knight. (b) (Mach.) Same as Angle iron. Angle bead (Arch.), a bead worked on or fixed to the angle of any architectural work, esp. for protecting an angle of a wall. Angle brace, Angle tie (Carp.), a brace across an interior angle of a wooden frame, forming the hypothenuse and securing the two side pieces together. --Knight. Angle iron (Mach.), a rolled bar or plate of iron having one or more angles, used for forming the corners, or connecting or sustaining the sides of an iron structure to which it is riveted. Angle leaf (Arch.), a detail in the form of a leaf, more or less conventionalized, used to decorate and sometimes to strengthen an angle. Angle meter, an instrument for measuring angles, esp. for ascertaining the dip of strata. Angle shaft (Arch.), an enriched angle bead, often having a capital or base, or both. Curvilineal angle, one formed by two curved lines. External angles, angles formed by the sides of any right-lined figure, when the sides are produced or lengthened. Facial angle. See under Facial. Internal angles, those which are within any right-lined figure. Mixtilineal angle, one formed by a right line with a curved line. Oblique angle, one acute or obtuse, in opposition to a right angle. Obtuse angle, one greater than a right angle, or more than 90[deg]. Optic angle. See under Optic. Rectilineal or Right-lined angle, one formed by two right lines. Right angle, one formed by a right line falling on another perpendicularly, or an angle of 90[deg] (measured by a quarter circle). Solid angle, the figure formed by the meeting of three or more plane angles at one point. Spherical angle, one made by the meeting of two arcs of great circles, which mutually cut one another on the surface of a globe or sphere. Visual angle, the angle formed by two rays of light, or two straight lines drawn from the extreme points of an object to the center of the eye. For Angles of commutation, draught, incidence, reflection, refraction, position, repose, fraction, see Commutation, Draught, Incidence, Reflection, Refraction, etc.