“One Zentangle A Day” by Beckah Krahula - Day 19 - Geometric Rectilinear Patterns The new tangles introduced in this lesson are Beeline, Cubine and Rain. With strong, geometric black areas, all three of the tangles introduced in this chapter are very bold. To provide a contrast to them, I used Crescent Moon and Printemps. I chose both of them because they consist of rounded shapes. In addition, Crescent Moon has bold black shapes around the edge which helps that area hold it’s own against the new tangles.