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Mar May |
Blog-Parents
Blog-Brothers
Callimachus
(Done with Mirrors)
Gelmo
(Statistical blah blah blah)
Other Blogs I Read
Regularly Often
Andrew Sullivan
(Daily Dish)
Kevin Drum
(Political Animal)
Hilzoy
(Obsidian Wings)
Maybe everyone else figured this out years ago, but for some reason it never occurred to me till last week.
A shape with many sides is a polygon. A six-sided shape is a hexagon. A five-sided shape is a pentagon. By the same reasoning, a four-sided shape ought to be a tetragon. (Not quadri-, that's Latin.)
A triangle has three corners, so we call it a triangle. It also has three sides, so it should be a trigon. And indeed it is. The science having to do with measuring such shapes is trigonometry.
9:25:36 PM [permalink] comment []