1. Limerick
Rules:
They are five lines long.
Lines 1, 2, and 5 rhyme with one another.
Lines 3 and 4 rhyme with each other.
They have a distinctive rhythm (which I’ll explain shortly)
They are usually funny.

2. Cinquain
Rules:
Cinquains are five lines long and are concerned with syllables when written.
They have:
-2 syllables in the first line
-4 syllables in the second
-6 syllables in the third
-8 syllablesin the fourth line
-2 syllables in the last line.
Cinquains do not need to rhyme, but you can include rhymes if you want to.
Ice cream.
Cold and yummy.
I love its sweet richness
as it finds its way into my
tummy.

3. Haiku
Like a cinquain, haiku's are also concerned with syllables over rhyming.
Rules:
Line 1: 5 syllables
Line 2: 7 syllables
Line 3: 5 syllables
Winter is coming.
Snow will be arriving soon.
We should rake the leaves.
My homework is late.
My dog ate it this morning.
I sure like my dog.