2 Aug
2015
2 Aug
'15
1:11 p.m.
Hello MathFunsters, Are there quadrangles having: - two right angles - and their four sides in arithmetic progression? I know only of one family of such quadrangles -- the ones build on the pythagorian triplet 3,4,5. The simplest example has the shape of an U with a tilted roof: - the left vertical wall has size 3, - the horizontal ground has size 4, - the right vertical wall has size 6, - the tilted roof has size 5. Best, É.