"Alexandrine Poetry Type is a line of poetry that has 12 syllables and derives from a medieval romance about Alexander the Great that was written in 12-syllable lines. An alexandrine is used to describe a line of poetic meter." Most of the examples I could find were in French, but I'm still pretty sure it rhymed and only the last line was 12 syllables.
An Alexandrine look at Libya:
How hard for Gadhafi, he's all alone;
The allied forces just increased the no-fly zone.
The US issued targeted air strikes,
Libya will be fighting on camels or bikes.
I enjoy structure, not to contradict,
but alexandrine poetry is just too strict...