Although Mossinghoff’s polygons are larger than any others found so far, he doesn’t know whether even larger ones exist. Now he’s pursuing a related query: Which equilateral polygon has the ...

Euclid figured out how to construct regular polygons with three, four or five sides—equilateral triangles, squares or regular pentagons, respectively.

There are lots of different types of polygon. Find out about quadrilaterals, triangles, polygons and circles in this KS2 Maths guide from BBC Bitesize.

There are lots of different types of polygon. Find out about quadrilaterals, triangles, polygons and circles in this Second Level Maths guide from BBC Bitesize.

Discover the different types of triangles and find out the difference between an equilateral, scalene, isosceles and right-angled triangle in this KS2 guide.

Learn about angles in triangles and quadrilaterals with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Learn about properties of 3D shapes with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

There are lots of different types of polygon. Find out about quadrilaterals, triangles, polygons and circles in this Second Level Maths guide from BBC Bitesize.