On Wednesday, January 10, 2007, at 02:05PM, "Don Sheldon" <don.sheldon@xxxxxxxxx> wrote: >Each step is 3/8ths of an inch taller and approximately 7/32nds wider >(actually 3/14ths, but good luck finding that on your ruler), so a six >pip would be 2 1/8" tall and 1 21/32" wide. Approximately. (Actually >1 9/14") Cool thanks. > That's right isn't it? Double check my math. Wednesday is bad for >arithmetic. Argh! Math. > And I think that IS linear growth, pretty much by definition. Yeah. You're right. I realize now what I thought I meant: the angles are not constant. As the pyramids get bigger, the get more squat (that is, the linear growth of the base width is a larger ratio to the linear growth of the height). So, if you were to take a hypothetical 10 pointer and cut of the top 1 inch of the tip, it would NOT be a 1 pointer, because it would be waaaay too wide.