Venn diagrams, also known as a set diagrams or logic diagrams, visually represent the relationship between two or more subjects consisting of two or more circles that overlap in the middle.

Rotate a two-circle Venn diagram by 180 degrees (or a three-circle one by 120 degrees), and it looks the same. But the four-ellipse diagram doesn’t have rotational symmetry.

Venn diagrams are great for helping us organise two sets of things based on their similarities and their differences. Things that have similarities are shown as overlapping circles, while things ...

Why a love of Venn diagrams is Kamala Harris’ not-so-secret weapon for creating smart policy Logic dictates that multiple variables must be accounted for in politics; interlocking circles help ...