I’ve seen memes on sites like Deviantart that challenge artists to take artwork from their past, and redraw them with their current skillset.
So, here’s an old image redrawn. It is a venn diagram of the quadrilaterals, by taxonomy. The cross-sectional areas are the shape of the shape they describe, so it doesn’t need labelling.
In this case, I traced the paths of the shapes in photoshop, then used a layer effect to apply a glow around the path, so you can only see coloured shadows made by each shape, rather than the actual shape itself.