I am knitting a shrug, Tanager Shrug from Graphic Knits, that has an unusual (to me) construction. It's knit in one piece, with a rectangular back and triangular points that grow from the back. These triangles get folded over and sewn to become the 'sides'. I am trusting the pattern and the schematic, and hope that it works.
I will have a lot of edging to pick up when I'm done the body - mindless tv knitting, here we come!