When I started making interactive diagrams the hard part was making them interactive part. But over the years I've gotten much better at that. Now the problem is designing the diagrams. A few weeks ago I was looking at the beginning of my hexagons guide to see what I could improve. I noticed this paragraph had no corresponding diagram:

In math, the "circumradius" is the distance from the center to a corner (I call this size); the "inradius" is the distance from the center to the middle of an edge, sqrt(3/4)*size. The "maximal diameter" is twice the circumradius; the "minimal diameter" is twice the inradius. Wikipedia has more.

I made it similar to the angle diagram in that I used dashed lines for the circles and also the measurement lines. But I needed two circles. I ended up making them different colors.

I didn't like it. But I didn't understand why. So I asked Twitter, and got lots of feedback.

So that led me to try out lots of variants of this diagram.

But there are pros and cons to each of these. Which one should I use? How can I evaluate these designs without knowing the purpose of this diagram?

That's part two.

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