What the examples teach
Multiples of 2, 3 and 5 shows why the centre holds only numbers divisible by all three (30 is the only one up to 30), and why numbers like 7 and 11 sit outside every circle, in the universal set. Quadrilaterals shows a subset relationship: a square is both a rhombus and a rectangle, so it lives in the overlap. The science and history pairs are classic compare-and-contrast diagrams.
To build one from scratch, start with a template or read our compare and contrast guide.
Questions people ask
What is a good example of a Venn diagram?
A simple one is cats vs dogs: purring and climbing go in the cats-only part, barking and fetching in the dogs-only part, and fur, four legs and being mammals in the overlap. Every example on this page opens in the maker so you can edit it.
What is a Venn diagram used for in real life?
Comparing options (products, candidates, holidays), sorting data in maths and statistics, planning essays, showing where skills or markets overlap, and in biology to show which genes appear in several samples.
How do I make my own version of an example?
Press “Open in the maker”. The example loads with all its text, and you can rename sets, change or delete items, switch colours and export.