<p class="lead">
I love it when people use Sketchplanations. Please respect the licence when you share so more people can find sketches they like too.
</p>
<div style="max-width:600px; margin: 0 auto;">
  <p class="text-center">
    <span class="inline-block align-middle">
      <a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">
        <img alt="Creative Commons Licence" style="border-width:0; margin:15px auto;" src="https://i.creativecommons.org/l/by-nc/4.0/88x31.png">
      </a>
    </span>
  </p>

  <p class="text-center">The images and associated explanatory text on this website are licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">Creative Commons Attribution-NonCommercial 4.0 International License</a></p>
</div>

In short, you're free to share any sketches but not sell them. You must include the source. Adding a link to the site or tagging a relevant social profile is extra helpful.

It's great when people share Sketchplanations, so please use sketches to illustrate your points in:

...as long as you give credit. In fact, I'd love you to use them to make a point, help explain something for others, further your career, or teach something to your students. That's what they're for!

Can I use them in my article, newsletter, presentation, LinkedIn post, Instagram business post, Medium post, or course? (or the like)

Yes. Please include the source. Because content is often reshared, I prefer that you don't remove the Sketchplanations logo from the sketches.

If you can add a link, i.e. it's online, this works well, I think:

...ideally with the word Sketchplanations linking to the sketch page as it appears on the site, e.g. to https://sketchplanations.com/the-overview-effect

If you can't add a link, for example, because it's in a book or flyer, then this works well:

Context matters when adding sources, so please make it work for you.

Can I translate them and share them in my language?

Yes, please! Make sure to include the original source as above.

Probably, yes. But please contact me for this, as some sketches have restrictions for printed collections after Big Ideas Little Pictures was launched with my publisher. I expect your publisher may want an image permission request signed in any case.

To keep records of permissions, please complete and email to me this Image Consent Form

If you're thinking of publishing a collection with many sketchplanations, reselling them, or some giant marketing campaign, billboard, selling prints or the like, please contact me at hello@sketchplanations.com, and we can discuss it.

Do you have high-resolution versions I can use?

Yes. You can use the download link underneath the sketch content on this site to get higher-resolution images if you need them.

Some older sketches may only give slightly higher resolutions when you download them. Feel free to contact me (hello@sketchplanations.com)—I will likely have a higher-res version.

Do you have an Image Consent Form I can complete?

Why, yes! Find it here: Image Consent Form

I'm still not sure whether my use case is OK. What should I do?

Contact me at hello@sketchplanations with what you're planning, and I can let you know.

If the sketches have helped you, great! If you're in a position to support me on Patreon for a time or buy me a coffee, it really helps, but it's not required. You can also contribute when downloading a high-resolution version if you choose. (OK, perhaps this isn't as frequently asked)

Good question. See here: https://sketchplanations.com/advise-vs-advice

Licence

A recap of some of the fundamental parts of a circle, including some that are easy to forget:

Diameter — a line crossing the circle through its centre. Also the longest straight line you can draw in a circle.

Radius — a line from the centre to any point on the edge. Also, half the diameter.

Sector — the classic Trivial Pursuit cheese, pizza or cake slice formed by two radii.

Area — equal to pi x the radius squared.

Circumference — equal to pi x the diameter.

Chord — a straight line touching any two points of a circle. The longest chord is the diameter.

Segment — the areas on either side of a chord, major and minor.

Tangent — a straight line just touching the edge of the circle without crossing it. It forms a right angle to the radius on the edge. Just as if you were able to lean a ladder against one.

More maths and science refreshers: States of matter, BODMAS (or PEMDAS), the 9 times table on your fingers, binary, incidence and reflection

Parts of a circle

Great to have you onboard! Look out for my emails each week.

Learn something new in a sketch each Sunday