Scissors congruence

Feb 6, 2018

The Wallace–Bolyai–Gerwien theorem says that if you have two polygons of equal area, you can cut one into pieces, and then place them back together to form the second piece. Dima Smirnov and Zivvy Epstein made an interactive to demonstrate. Draw two shapes and watch the magic happen.


Marrying Age

People get married at various ages, but there are definite trends that vary across demographic groups. What do these trends look like?

The Best Data Visualization Projects of 2014

It’s always tough to pick my favorite visualization projects. Nevertheless, I gave it a go.

Shifting Incomes for American Jobs

For various occupations, the difference between the person who makes the most and the one who makes the least can be significant.

Pizza Place Geography

Most of the major pizza chains are within a 5-mile …