Triangularity Quilt Pattern by Jeni Baker

An equilateral triangle quilt, and more usefully, the math to build one at any size you want.

Triangle quilts are beautiful and simple to piece. The hard part has never been the sewing, it is the arithmetic: what size triangle, how big the finished quilt ends up, how many triangles you get from a single strip. None of that is intuitive, and getting it wrong costs you fabric.

This pattern solves that. Five sizes are included, from baby through king, and beyond those, Jeni walks through the calculations so you can build any size quilt with any size triangle. That makes it less a single-quilt pattern than a reference you keep, which is a different kind of value on a shelf.

Cutting instructions are written for a standard acrylic ruler, with no specialty tool required, and a template is included if you prefer that route or want to fussy cut.

Fat quarter friendly and a natural fit for a curated bundle where you want the fabrics themselves to be the design.

Sizes included: Baby, throw, twin, full/queen, king, plus custom sizing instructions
Designer: Jeni Baker, In Color Order
Technique: Equilateral triangles, standard machine piecing