Angles at a point add up to 360&deg;.<br><br>
&bull; Angle d is a reflex angle (larger than 180&deg;)<br>
&bull; Read the given acute/obtuse angle from the diagram<br>
&bull; Angle d = 360&deg; − given smaller angle<br>
&bull; Angle d = 360&deg; − 140&deg; = 220&deg;<br><br>
Final Answer: 220