What is the length of the following lines?
is it even so? then i defy you, stars!
thou know'st my lodging: get me ink and paper,
and hire post-horses; i will hence to-night.
hexameter
pentameter
decameter

The length of the lines stated above is pentameter.

Here's why:

The number of words included per phrase is in maximum of five. In Greek or Latin, penta means the number five. Pentameter is the term used to refer to a line of verse which is five metrical feet in length.