Daily Archives: 18-November-2015

Letter Folding for Envelopes

I still occasionally write paper letters. In fact, I had some letters to write the other day, and I realized that was doing a bit of math when I folded the letters for placement into standard business envelopes that was worth discussing here. Figure 1 shows the business envelope that I normally use. Continue reading

Posted in General Mathematics, Origami | 2 Comments