Acute Angles is a sister volume to We Said Hello and Shook Hands, which appeared in 2015. That volume presented over 500 collage collaborations between Zach Collins and over 100 other collage artists, in which one artist's "starter collage" would be completed by one or more collaborating artists. However, some of the "starter collages" that Zach put together seemed to want to stand on their own. Acute Angles is a selection of those elegant, simple works, speaking quietly but with a clear voice.