Main Page | See live article | Alphabetical index A trilon is a box in the shape of an equilateral-triangular right prism that is occasionally used on certain game shows to hide information until needed. The squares on the old Concentration game board, the categories on Pyramid, and the letter squares on the old Wheel of Fortune letter board used trilons. (There may be other uses that I am not aware of. Please feel free to edit this page if you have more information.) This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.