One complete turn = 360&deg;.<br><br>
&bull; 1 complete turn = 360&deg;<br>
&bull; Half a complete turn = 360&deg; &divide; 2 = 180&deg;<br>
&bull; 1&frac12; complete turns = 360&deg; + 180&deg; = 540&deg;<br><br>
Final Answer: 540&deg;