A Shakespearean sonnet is a poetic form consisting of 14 lines, typically written in iambic pentameter. It follows a specific rhyme scheme of ABABCDCDEFEFGG. This structure allows for a clear expression of ideas, often exploring themes of love, beauty, and time. The sonnet is divided into three quatrains and a final couplet. Each quatrain develops a specific aspect of the theme, while the couplet provides a resolution or a twist. William Shakespeare, the playwright and poet, popularized this form in the late 16th century, contributing significantly to English literature.