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A to Z GIS | Explore this related guide, featuring updated terms and graphics and developed in coordination with Esri’s GIS Dictionary team.

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face

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  1. [geometry] A planar surface of a geometric shape, bounded by edges.

    Media/face-1.gif
  2. [geometry, spatial analysis] In a TIN, the flat surface of a triangle bounded by three edges and three nodes. Faces do not overlap; each face is adjacent to three other faces of the TIN. A face defines a plane with an aspect and slope.

    Media/face-2.gif

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