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Definition of ANGLE
: a corner whether constituting a projecting part or a partially enclosed space <they sheltered in an angle of the building>
a: the figure formed by two lines extending from the same point; also:dihedral angle
b: a measure of an angle or of the amount of turning necessary to bring one line or plane into coincidence with or parallel to another
a: the precise viewpoint from which something is observed or considered <a camera angle><consider the question from all angles>; also: the aspect seen from such an angle <discuss all angles of the question>
b (1): a special approach, point of attack, or technique for accomplishing an objective <try a new angle>(2): an often improper or illicit method of obtaining advantage <a salesman always looking for an angle>
: a sharply divergent course <the road went off at an angle>
: a position to the side of an opponent in football from which a player may block his opponent more effectively or without penalty —usually used in the phrases get an angle or have an angle
In geometry, a pair of rays (seeline) sharing a common endpoint (the vertex). An angle may be thought of as the rotation of a single ray from an initial to a terminal position. Clockwise rotation is considered negative and counterclockwise rotation positive. Either may be measured in degrees (one full rotation = 360°) or radians (one full rotation = 2 rad). A 90° angle is called a right angle. Any angle less than 90° is an acute angle. Any angle more than 90° but less than 180° is an obtuse angle.