yphen-minus (-, ASCII 45, next to the zero key)</li>
<li>the en-dash (–, Unicode 2013, Alt+0151 on Windows)</li>
<li>the em-dash (—, Unicode 2014, Alt+0150 on Windows)</li>
<li>the true minus (−, Unicode 2212)</li>
</ul>
<p>The true minus, when a typeface has one, is <em>designed for mathematics</em>. It has the same length and line thickness as the crossbar of the plus sign, and it sits at the same height above the baseline. By comparison, the hyphen-minus is quite a bit shorter and sits lower. Hyphe