Sunday 15 August 2021

qed

In plane geometry, according to the theorem proved by mathematician John Horton Conway (see previously, *1937 - †2020), when the points of a triangle are extended by the length of the side opposite each vertex, the six points fall on a circle which shares the same centre as the triangle. Computationally, logically, this geometric construct demonstrates something that could have easily been included in Euclid’s Elements but took several millennia to be discovered.