Blue's user avatar
Blue's user avatar
Blue's user avatar
  • Member for 3 years, 7 months
  • Last seen this week

  • Follow @blue on, the mathy Mastodon instance.

  • See my (Tee)Spring shop, "Inspired by Math", for t-shirts featuring some of my mathy
    designs that have become somewhat popular on Math.SE.

  • My Etsy shop, also "Inspired by Math", has posters. (Want a particular design? Tell me!)

  • Contact me via the "Email the Trigonographer" link at

  • Trigonographer at, spotlighting diagrammatic proofs for trig relations.

  • Hedronometer at, studying the dimensionally-enhanced trig of tetrahedra.

  • I use GeoGebra —specifically, the desktop app— for my images.
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