A discussion of locating objects in three dimensions, and how to graph that.
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Ask Dr. Math
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A discussion of various types of 3D coordinate systems.
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Ask Dr. Math
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An interactive, Web-based tutorial that demonstrates how 3D coordinates work.
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University of Tennessee
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This page shows a point plotted in the (+, +, +) octant in a 3-D coordinate system.
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Colorado University
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How to identify a point P with coordinates (x,y,z), 3D diagram included
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The Geometry Center
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Explains how the distance formula works in 2 dimensions as well as how to find distances in 3D.
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Ultrashock Forum
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