Circles, triangles and squares. One of the first things we learn as children are basic geometric shapes. And they stay with us throughout our lives. Maybe it’s that sense of familiarity that makes ...

Bruno Munari, X Hour (all images from ‘Bruno Munari: Square Circle Triangle,’ courtesy of Princeton Architectural Press, unless otherwise noted) As tall and as broad as a man with his arms ...

Area is the amount of space taken up by a flat shape and is calculated by counting the square units inside it; almost like the tiles on a floor. For example, if we can repeatedly fit a square with 1cm ...