A Venn diagram in math can show how various sets of numerical data overlap with one another. For example, if one circle represents every number between 1 and 25 and another represents every number ...

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. Can that be fixed?

Learn how to draw and interpret Venn diagrams with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Focus on the data in the Venn diagram, not on its appearance. Provide the data in brief statements. Give a summary if one is immediately apparent. Include the caption only if it is not accessible from ...