Do all poems need to rhyme? If so, give me the examples>
Thanks.
Not all poems need to rhyme.
http://en.wikipedia.org/wiki/Poetry
This site has a good article on poetry in general. You can click on section 2.2 to read more about types of rhyme.
If a poem is unrhymed, it's called blank verse. http://en.wikipedia.org/wiki/Blank_verse