Description

How's your knowledge of circles?

Probably the most basic, yet mysterious, shape in all of two-dimensional geometry whose study has spanned centuries and whose basic shape has innumerable interesting properties!

And, don't even get started on Pi.


Find out now in a quick fire quiz where you have to score points as quickly as you can to build your high score!

What's New in Version 1.0

This app has been updated by Apple to use the latest Apple signing certificate.