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right angle — right angles also right angle 1) N COUNT A right angle is an angle of ninety degrees. A square has four right angles. 2) PHRASE: oft PHR to n If two things are at right angles, they are situated so that they form an angle of 90° where they touch… … English dictionary
Right ascension — (abbrev. RA; symbol α) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.ExplanationRA is the celestial equivalent of… … Wikipedia
Angle — This article is about angles in geometry. For other uses, see Angle (disambiguation). Oblique angle redirects here. For the cinematographic technique, see Dutch angle. ∠, the angle symbol In geometry, an angle is the figure formed by two rays… … Wikipedia
right-angled — 1) ADJ: ADJ n A right angled triangle has one angle that is a right angle. [BRIT] (in AM, use right triangle) 2) ADJ: ADJ n A right angled bend is a sharp bend that turns through approximately ninety degrees … English dictionary
Angle trisection — The problem of trisecting the angle is a classic problem of compass and straightedge constructions of ancient Greek mathematics.Two tools are allowed # An un marked straightedge, and # a compass, Problem: construct an angle one third a given… … Wikipedia
Degrees of freedom (mechanics) — In mechanics, degrees of freedom (DOF) are the set of independent displacements and/or rotations that specify completely the displaced or deformed position and orientation of the body or system. This is a fundamental concept relating to systems… … Wikipedia
Visual Angle Illusion — The visual angle, V degrees, subtended by a viewed object sometimes looks larger or smaller than its actual value, creating a visual angle illusion (V illusion).These V illusions have been explicitly described by many vision researchers,… … Wikipedia
Degree (angle) — One degree (shown in red) and ninety degrees (shown in blue) This article describes the unit of angle. For other meanings and some specific usages, see degree. A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by °… … Wikipedia
Dihedral angle — In aerospace engineering, the dihedral is the angle between the two wings; see Dihedral (aircraft). In geometry, a dihedral or torsion angle is the angle between two planes. Figure 1: Dihedral angle of three vectors, defined as an exterior… … Wikipedia
Kurt Angle — Angle at a WWE Q A in August 2005. Ring name(s) Kurt Angle Height 5 ft 10 in (1.78 m) … Wikipedia
Grad (angle) — The grad is a unit of plane angle, equivalent to frac|1|400 of a full circle, dividing a right angle in 100. It is also known as gon, grade, or gradian (not to be confused with grade of a slope or gradient, or radian). One grad equals frac|9|10… … Wikipedia
