The 'Triangulate' tool in Artisan will divide all of the selected faces into triangles. Existing triangles will not be modified. Many of the tools in Artisan (sculpting, smoothing, polygon reduction) produce better results when using triangulated geometry.
Launching the Tool
The Triangulate tool is found in the Artisan menu. Go to Tools->Artisan->Triangulate to activate it.
- Select the faces for triangulation
- Launch the tool
- The selected faces will be triangulated (see figure below)