I wrote this during a covered English lesson which happened to be in the
maths corridor, and I was bored with nothing to do so I was staring at
the board ahead of me, which had maths stuff on it from the previous lesson.
My maths teacher now swears by this for her younger students...
had a good ruse
With a rule just for triangles to use
"Add the squares of each side,"
He said with some pride,
"That's the square of the hypotenuse!"