Definition:Orientation of Coordinate Axes/Cartesian 3-Space/Right-Handed

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This page is about right-handed Cartesian 3-space in the context of analytic geometry. For other uses, see orientation.


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Definition

A Cartesian $3$-Space is defined as being right-handed if it has the following property:

Let a right hand be placed such that:

the thumb and index finger are at right-angles to each other
the $3$rd finger is at right-angles to the thumb and index finger, upwards from the palm
the thumb points along the $x$-axis in the positive direction
the index finger points along the $y$-axis in the positive direction.

Then the $3$rd finger is pointed along the $z$-axis in the positive direction.


Right-hand-3-space.png


Also known as

A right-handed orientation of a Cartesian $3$-Space is also referred to as the positive orientation.

Some sources refer to the $3$ coordinate axes in a right-handed Cartesian 3-space as a right-handed triad.


Also see


Sources

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