rob_in_1's blog

By rob_in_1, history, 13 months ago, In English,

Can we always form a cyclic quadrilateral using 4 side lengths? I was solving this problem on SPOJ In order to find the maximum area of quadrilateral with side lengths given, I applied Brahmagupta's formula K={\sqrt {(s-a)(s-b)(s-c)(s-d)}}\, and i got AC. I am wondering, is that always possible? Is there any proof?

Read more »

  • Vote: I like it  
  • +2
  • Vote: I do not like it