A nonet has nine lines. The first line has nine syllables, the second line eight syllables, the third line seven syllables, etc… until line nine that finishes with one syllable. 
It can be on any subject and rhyming is optional.
line 1 – 9 syllables
line 2 – 8 syllables
line 3 – 7 syllables
line 4 – 6 syllables
line 5 – 5 syllables
line 6 – 4 syllables
line 7 – 3 syllables
line 8 – 2 syllables
line 9 – 1 syllable
Example Poem
Maybe Later
Procrastination, that’s what I do.
‘Tis a wonderful business tool.
It works for most, might for you,
I used it back in school.
Just work on what’s due.
Then all is cool.
That’s the clue.
This fool’s–


Rictameter is a scheme similar to Cinquain.
Starting your first line with a two syllable word, you then consecutively increase the number of syllables per line by two. i.e. 2/4/6/8/10   Then down again, 8/6/4/2 Making the final line the same two syllable word you began with.
This form looks best when centered
Example Poem
The puppy lived
because I rescued him.
Just a boy myself, no one close.
Nursed him to health; trained him easily too
and my grandma watched us blossom.
He played with me, slept with
me, became my