The Pyramid Square uses just knits and purls to create rows of interlocking triangles. This stitch pattern is fully reversible and has no border.

Pattern includes written instructions for 2 common sizes, knitting chart and links to fully captioned tutorial videos.

Loom
⅜” small gauge (SG) loom with at least 33 (57) pegs.
KB Flexee Loom Skinny used in sample.