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ng many sides, as a solid body. Polyhedral angle, an angle bounded by three or more plane angles having a common vertex.

n micrometer, a micrometer applied to the tube of an astronomical telescope for measuring angles of position in the field of view. -- Single position (Arith.), the method of solving problems, in which the result obtained by operating with an assumed number is to the true result as the number assumed is to the number r…

, under Plane. -- Principal of a quadric (Geom.), three planes each of which is at right angles to the other two, and bisects all chords of the quadric perpendicular to the plane, as in an ellipsoid. -- Principal point (Persp.), the projection of the point of sight upon the plane of projection. -- Principal ray (Per…

the difference of dispersive power being compensated by giving them different refracting angles, so that, when placed together so as to have opposite relative positions, a ray of light passed through them is refracted or bent into a new position, but is free from color. -- Nicol's prism, Nicol prism. Etym: [So called…

To suggest; to dictate. And whispering angles prompt her golden dreams. Pope.

To draw to a scale; to lay down the lines and angles of, with scale and protractor; to plot.

A mathematical instrument for laying down and measuring angles on paper, used in drawing or in plotting. It is of various forms, semicircular, rectangular, or circular.

A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.

A plane figure having four angles, and consequently four sides; any figure having four angles.

Having four angles, and consequently four sides; tetragonal. -- Quad*ran"gu*lar*ly, adv.

Having four equal sides, the opposite sides parallel, and four right angles; square. Figures, some round, some triangle, some quadrate. Foxe.

Having four sides, and consequently four angles; quadrangular.

One who quarrels or wrangles; one who is quarrelsome. Shak.

.), an arrangement in which a belt transmits motion between two shafts which are at right angles with each other. -- Quarter watch (Naut.), a subdivision of the full watch (one fourth of the crew) on a man-of- war. -- To give, or show, quarter (Mil.), to accept as prisoner, on submission in battle; to forbear to kill…

At right angles, as the cranks of a locomotive, which are in planes forming a right angle with each other.

n four or more parts; -- said of a shield thus divided by lines drawn through it at right angles.

A plane figure with fifteen angles, and consequently fifteen sides.

Having five angles or corners.

Having five angles; quinquangular.

An implement consisting of a headpiece having teeth, and a long handle at right angles to it, -- used for collecting hay, or other light things which are spread over a large surface, or for breaking and smoothing the earth.