American artist Al Held (1928–2005) was an abstract painter, most famous for his large-scale, geometric works. His paintings are full of circles, squares, cubes, and other geometric shapes and forms that overlap. In the painting below, he used a masking technique to create lines with sharp edges. He masked (covered) the white sections with tape and painted the remaining sections black.
Here’s how you can make your own geometric painting using materials you may already have at home: