Question

"A horse! A horse! my kingdom for a horse!" why is this verse of Shakespeare an example of iambic pentameter?

Answer 1

"A horse, a horse, my kingdom for a horse!" This line is an example of meter from Shakespeare's play, Richard the Third. There is a rhythm to this language when spoken. It is written in perfect iambic pentameter because it has five iambs.

Answer 2

It contains five metrical feet, each with an unstressed and then a stressed syllable. :)

Correct on a-pex