What is iambic pentameter and what are some simple examples of it?

a line of verse with five metrical feet, each consisting of one short (or unstressed) syllable followed by one long (or stressed) syllable, for example Two households, both alike in dignity.

examples;

It is the east, and Juliet is the sun. (William Shakespeare, Romeo and Juliet)

Her vestal livery is but sick and green

And none but fools do wear it; cast it off. (Shakespeare, Romeo and Juliet)