Square on Isosceles

With concentration levels now on the wane, the Professors have been called in to deconstruct the scene – apparently rich with semiotic detail - Dieterling, as usual, taking notes. One of the professors – Hex or Horn – always difficult to say - gives a Eureka cry.

What is it, Professor, a hypothesis?

Indeed, Professor, the makings of several hypotheses.

Well, as long as it does not involve Socrates. Or indeed the square on the isosceles...