Proof without words: The Sum

<strong><em>Objective</em></strong><em>In this note, we prove geometrically that </em><strong><em>Methodology</em></strong><em>: In mathematics, a proof without words is a proof of an identity or mathematical statement, which can be demonstrated as self-evident by a diagram without any accompanying explanatory text. Using this method, we give the value of </em><em> .</em>