Mnemonics to help remember the terms for rotations around principal axes by CMG Lee. The cat shapes are from <a class="external free" href="https://commons.wikimedia.org/wiki/File:Cat_silhouette.svg">http://commons.wikimedia.org/wiki/File:Cat_silhouette.svg</a> and <a class="external free" href="https://commons.wikimedia.org/wiki/File:Motovun_Jack.svg">http://commons.wikimedia.org/wiki/File:Motovun_Jack.svg</a> .
cmglee, Chris-martin, Jeremy Ruston
CC BY-SA 4.0
<table style="display:inline;border-collapse:collapse;vertical-align:top;"><tbody><tr><td><div class="thumb tnone"><div class="thumbinner" style="width:222px;"><a href="https://upload.wikimedia.org/wikipedia/commons/6/60/Cat_silhouette.svg"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Cat_silhouette.svg/220px-Cat_silhouette.svg.png" decoding="async" width="220" height="209" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Cat_silhouette.svg/330px-Cat_silhouette.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Cat_silhouette.svg/440px-Cat_silhouette.svg.png 2x" data-file-width="400" data-file-height="380"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Cat_silhouette.svg" class="internal" title="Enlarge"></a></div><a href="//commons.wikimedia.org/wiki/File:Cat_silhouette.svg#filelinks" title="File:Cat silhouette.svg">Cat silhouette.svg</a></div></div></div></td></tr></tbody></table><table style="display:inline;border-collapse:collapse;vertical-align:top;"><tbody><tr><td><div class="thumb tnone"><div class="thumbinner" style="width:222px;"><a href="https://upload.wikimedia.org/wikipedia/commons/a/a4/Motovun_Jack.svg"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Motovun_Jack.svg/220px-Motovun_Jack.svg.png" decoding="async" width="220" height="128" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Motovun_Jack.svg/330px-Motovun_Jack.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Motovun_Jack.svg/440px-Motovun_Jack.svg.png 2x" data-file-width="680" data-file-height="396"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Motovun_Jack.svg" class="internal" title="Enlarge"></a></div><a href="//commons.wikimedia.org/wiki/File:Motovun_Jack.svg#filelinks" title="File:Motovun Jack.svg">Motovun Jack.svg</a></div></div></div></td></tr></tbody></table>