Do sonnets have to be in iambic pentameter?

Related questions

1. Are sonnets in iambic pentameter?
2. Why does Shakespeare write iambic pentameter?
3. What is iambic pentameter?
4. Which is an example of iambic pentameter?
5. What is an unstressed syllable called?
6. Do we speak in iambic pentameter?
7. What is an IAMB example?
8. What does ABAB mean?
9. How do you explain iambic pentameter?
10. How do you know if a syllable is stressed or unstressed?

Tags

1. #there
2. #words
3. #iambic
4. #nearly
5. #usually
6. #beats
7. #every
8. #which
9. #rhymes
10. #means
11. #syllables
12. #changed
13. #sonnet
14. #everything
15. #stressed
16. #pentameter
17. #rhyme
18. #lines