How to select only tris (or non quads)

Support Modeling
1

I’m making a quads only complex mesh and I must have snuck a tri or ngon in there. Is there a way to select only tris (or non quads)

I tried an old wiki solution, ctrl-alt,shift-6 and it spun my whole desktop around 90 degrees on Windows 7. (Ctl-alt-shift-6) to get it back to normal)

Thanks.

2

Look in the Select menu, Select Faces by Sides
Equal to 3 for tris
Greater than 4 for ngons
Equal to 4 for quads and invert selection for both tris and ngons

3

Thank you.