Trees depicted in famous artworks across a range of styles follow the same mathematical rules as their real-life counterparts, scientists have found. The math concept hidden in this tree art ...

5. Abstract Patterns Experiment with abstract patterns and shapes to create visually interesting designs. This is a great way to practice your linework and explore different styles.

Abstract geometric designs at Big Bend National Park in Texas that had survived for thousands of years were “irreparably damaged” by vandals who scratched names and dates into the prehistoric ...