Monthly Archives: June 2021

Happy tau day!

Happy Tau Day! The Tau Manifesto by Michael Hartl is now available in print, if you’re in the market for a particularly nerdy coffee table book and conversation starter: I also wrote about Tau Day ten years ago; see that … Continue reading

Posted in famous numbers, links | Tagged , , | 1 Comment

Challenge: area of a parallelogram

And now for something completely different!1 Suppose we have a parallelogram with one corner at the origin, and two adjacent corners at coordinates and . What is the area of the parallelogram? There are probably many different ways to derive … Continue reading

Posted in challenges, geometry | Tagged , | 18 Comments

Post without words #32

Posted in posts without words | Tagged , , , | 8 Comments