I don't think I'm wanting to cut my photos into triangles.
If you look hard at your embellishments you will find triangles within stars, pennants,tags etc.
For my layout I decided to scraplift an example I saw online, and used what I had in my kit that was big enough.
My trick was to draw one triangle then trave around it on several other scraps of paper.
I'd like to enter this in Lasting memories challenge which is to use more than one triangle.