Learn about and revise the different angle properties of circles described by different circle theorems with GCSE Bitesize Edexcel Maths.

Circle theorems are properties that are true for all circles, regardless of their size. There are six theorems to learn and recognise. ... Theorem 6 - The alternate segment theorem.

Johnson’s circle theorem demonstrates two of the essential requirements for mathematical beauty. First, it is surprising. You don’t expect the same-sized circle to show up again in the solution.

Descartes’ theorem, a cornerstone of geometry, defines the relationship between four mutually tangent circles. But for centuries, generalizing the equation to more than four circles had eluded ...

Mathematicians at Monash University have cracked a centuries-old puzzle dating back to the 17th century, extending Descartes’ Circle Theorem into a bold new territory.