Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.
A corner emerges from the point of transition between two adjacent surfaces, where the shape of one surface meets the shape of the other, forming a vertex.
External reference — all senses of the word “corner” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.