Body relative direction
Relative geometrical orientations / From Wikipedia, the free encyclopedia
"Upright" redirects here. For other uses, see Upright (disambiguation).
For other meanings of the most common terms for relative directions, see Left (disambiguation), Right (disambiguation), Up (disambiguation), and Down (disambiguation).
Body relative directions (also known as egocentric coordinates)[1] are geometrical orientations relative to a body such as a human person's body or a road sign. The most common ones are: left and right; forward and backward; up and down. They form three pairs of orthogonal axes.
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