JUST as the sequence of propositions arranged by Euclid to form the first book of his “Elements” reaches its climax in the proof of Pythagoras's theorem, so those in the three succeeding books ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is one of the models of plane ...

Today on the 'Name That Thing' quiz, we will test how much you know about geometric shapes. Here are four types of polygons in the image below. Can you tell what these are called in mathematics? What ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...