Geometric abstract art combines basic geometric shapes—squares, circles, triangles—in various ways to explore the relationships between form, color, and space. If you've read any of my blog posts about abstract expressionism, you'll know that I love the pure expressiveness of it. In other words, the randomness, the thoughtlessness, the emotional, and the imperfectness of it. Yet, the precision in some geometric abstract art captivates and even soothes me. And the style has an important place in...