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There are two and only two choices in determining y-axis with known or arbitrarily chosen x-axis one rotating 90 degrees clockwise, other 90 degrees counterclockwise. If someone decides to edit this out, he/she has the obligation to suggest other possibilities of determining the y-axis. This edit is
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There are two and only two possible rotations in the coordinate planes: so at least for engineering computations, these two senses, clockwise and counterclockwise ought to be incorporated in the definition. Any one inclined to edit this out ought, in the very least state if there are more
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If one of the two normals is determined by the Right-hand rule, isn't the other normal, in the opposite direction, uniquely determined by the Left-hand rule?
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If an outward normal is to be recognized, shouldn't an inward normal be also recognized? The inward normal vector represents a
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Alternate
Engineering Definition of Left and Right-hand rules for orthogonal Cartesian Coordinate Systems
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possibilities in 3-dimensional space, that is 3 coordinate planes.
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article unambiguous and unique correlation between sign of
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Surface Normal
Outward Normal Left and Right hand rules
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