If you hover over each of the buttons in the group of three, you will see they represent vertex-select, edge-select and face-select respectively. In Edit mode, the header (it's at the top) of the 3D View window changes to show the selection-mode controls. Select mode buttons in a 3D View header, showing Vertex select mode active. Particularly when constructing a model for animation purposes.
You can have faces with 5 or more sides, but you will usually find that things work best if all faces, as far as possible, are quads. Starting with v2.63, and the introduction of the BMesh architecture, that restriction has been lifted. Prior to version 2.63, only three or four sides were allowed, so faces had to be triangles or quadrilaterals (usually abbreviated to quads) respectively.
The edges and vertices are essentially geometrical "scaffolding" necessary to hold the object together.Ī face must have three or more sides (edges). It is the faces that make up the visible surface of the object. A pair of vertices can be joined by a straight line called an edge, and a complete loop of edges can be filled in to form a face. 9 Manipulator, Transformation Hotkeys, Pivot PointĪ mesh is made up of one or more vertices each vertex is just a point in space.7 Border Select (Box Selection) & Circle Select (Brush Selection).
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