Impossible Triangle Sculpture
Public Art: Impossible Triangle
Sculptors: © Designed by artist Brian McKay and
architect Ahmad Abas.
Location: In the centre of the East Parade roundabout
in East Perth, Western Australia.
Description: This 13.5m high aluminium clad sculpture
is based on a mathematical formula.
Commissioned By: Unknown
History: This strange sculpture
has confused motorists for years. Placed in the middle of a busy roundabout, very few people know of the geometric
phenomenon it is based on. Needless to say neither did I until I did a little bit of research.You may not know
this, but the trick or illusion of this clever design is that if you wander around it long enough you will find a
spot where the sculpture will give the illusion of being a perfect triangle. The geometric phenomenon is based on a
mathematical formula discovered by Lionel Penrose (British geneticist) and his son, Sir Roger Penrose (Mathematics
professor). I personally didn't find the actual spot because a) it is located in a death trap for pedestrians and B) because there is no plaque or sign telling you about it. The sculpture was one of
three short listed for the East Perth Redevelopment project when local artists were invited to enter submissions in
size of the sculpture was increased from the planned height of 9m to 13.5m so the public could appreciate it