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Entity > Abstract > Quantity > PhysicalQuantity > ConstantQuantity > PlaneAngleMeasure
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PlaneAngleMeasure comparison table
Subject is an instance of documentation
AngularDegreeUnitOfMeasureA PlaneAngleMeasure
RadianSystemeInternationalUnitSI PlaneAngleMeasure. Symbol: rad. It is the angle of a circle subtended by an arc equal in length to the circle's radius. Another definition is: the plane angle between two radii of a circle which cut off on the circumference an arc equal in length to the radius. Radian = m/m = 1

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