Note: Although this may seem maths-related, I did do some research on meta and it seems that questions which take an 'elegant' solution are on-topic. There are many ways to tell if four points are cyclic (i.e lie on a circle). However, given four points and angles and lengths as shown below, wha...
00:00 - 08:0008:00 - 00:00
00:00 - 08:0008:00 - 00:00