Investigating vertices, edges, and faces
Vertices, edges, and faces are the basic building blocks of the 3D mesh objects. A vertex is a point in space. The plural of vertex is vertices, pronounced (ver-tuh-sees), and is used when talking about two or more points in space. You describe a point by the X, Y, and Z coordinates, as we discussed in Chapter 2, Getting Comfortable using the 3D View. An edge is a line that connects two vertices. A face is the flat area or plane between three or more vertices, outlined by edges that connect those vertices. It is also referred to as a polygon. The following graphic shows them all together:
In the next illustration, ...
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