Recently I came across the website onesentencepoems.com and, enjoying the items' brevity, I did some browsing -- and term-searching -- looking for mathy poems. Here are two samples by teacher and poet Jeffrey Park -- originally from Baltimore, now a teacher in Germany.
She always sleeps with protractor and compass
on the bedside table, never knowing when
a sudden fit of geometry will strike in the night.
Numbers pelt down from an infinite sky, neither irrational nor imaginary,
the angular ones, 4s and 7s, doing maximum damage.