<div>Notice, that both vertices&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="1">\(1\)</span>&nbsp;and <span class="ltx_Math" contenteditable="false" data-equation="3">\(3\)</span>&nbsp;are each adjacent to vertices&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="2">\(2\)</span>&nbsp;and&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="4.">\(4.\)</span>&nbsp;Vertices&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="2">\(2\)</span>&nbsp;and <span class="ltx_Math" contenteditable="false" data-equation="4">\(4\)</span>&nbsp;are each adjacent to vertices&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="1">\(1\)</span>&nbsp;and&nbsp;<span class="ltx_Math" contenteditable="false" data-equation="3.">\(3.\)</span>&nbsp;With that being said, we can write out our adjacency matrix as follows:&nbsp;<br></div>