Triple Tool

(default keyboard shortcut Shift T)

The Triple command (Multiply > Subdivide > Triple) converts the selected polygon(s) into triangular polygons. For example, a square polygon becomes two triangular polygons. Triangles cannot by definition become non-planar; therefore, this tool is useful for objects you wish to animate using bones, or objects that will have Displacement Maps. Tripling non-planar polygons makes them planar.