This quilt pattern by Stephanie Soebbing of Quilt Addicts Anonymous comes with instructions for a Lap (48" x 55.5") and King (96" x 111").
This pattern uses a ruler with all three points like the Clearview Triangle Ruler, which you can purchase by clicking here.
Interlocking Triangles was inspired by a Frank
The Interlocking Triangles Quilt Kit features fabric from Impressions by Melissa Marie Collins for Windham to complete the quilt top. This quilt kit is a Lap and finishes at 48" x 55.5".
The PDF pattern for Interlocking Triangles must be ordered separately at this link. The pattern is free for Stashin'