Clockwise - in the same direction in which the hands or a clock move, Counterclockwise - in the opposite direction in which the hands of a clock move, Degree - the unit used for measuring angles, Protractor - a tool used for measuring the size of an angle, Acute Angle - an angle that measures greater than 0 degrees and less than 90 degrees, Obtuse Angle - An angle that measures greater than 90 degrees and less than 180 degrees, Ray - a part of a line; it has one endpoint and continues without end in one direction, Right Angle - an angle that forms a square corner and has a measure of 90 degrees, Vertex - the point at which two rays on an angle meet ,

Angles Vocabulary

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