s surface, and longitude marks the east-west position (see Figure <a href="activity.html#fig:longlat">6.4</a>). The center of Amsterdam, for example, is {latitude: 52.37022; longitude: 4.89517}, which can be verified by punching these numbers in <a href="https://tinyurl.com/ybxxk99a">Google maps</a>.</p>
<div class="figure" style="text-align: center"><span id="fig:longlat"></span>
<img src="images/activity/Latitude_and_Longitude_of_the_Earth.png" alt="Latitude and Longtitude of the Earth (source: WikiPedia)