How to find tris in your mesh

[t_smith5]

Hi

How can you find tris in a mesh? I know how to find n-gons by going to Mesh > Cleanup, but there's no option for tris.

[Christoph_Schaedl · Accepted solution]

Search for Quads and invert the selection. 

[t_smith5]

How do you invert the selection? Is it Shift? Because when I have 4-sided faces ticked, hold Shift, and then Apply, everything highlights in orange.

EDIT: Never mind. Just noticed that tris are marked in grey. 😛 Thanks for the help.