I still remember this one
Pentagon has five sides
five five sides
Hexagon has 6 sides
six six sides
Septagon has 7 sides
seven seven sides
Octagon has eight sides
eight eight sides
Nonagon has nine sides
nine nine sides
And the king Decagon has t-e - n sides
ten ten sides
Learning math is fun, fun, fun, fun
Now I know the number of sides in the Pentagon (5!)
hexagon 6!
septagon 7!
octagon 8!
Nonagon 9!
And the king, DECAGON with 10 sides!
Its to cringe to forget