Question

Why did shakespeare noble characters speak in iambic pentameter

Answer 1

lambic pentameter was used for the nobles' speech while blank verse or prose was used for commoners. This could be to create a distinction between the classes and to show that the nobles were intelligent, as iambic pentameter has a natural rhythm. 

Answer 2

To show the education and refinement of the nobles.

Step-by-step explanation:

Shakespeare's noble characters speak in iambic pentameter to show the education and refinement of the nobles. It is usually the aristocratic members of the play who speak in verse. Iambic pentameter sounds like poetry, it has a melodious sound. On the other hand, commoners speak in prose. In Shakespeare's plays when the commoners speak the writing goes from the beginning to the end of the line.