ES.258 | Spring 2007 | Undergraduate

Gödel, Escher, Bach

Penrose triangle

Description:

The Penrose triangle, also known as the tribar, is an impossible object. It appears to be a solid triangle made of three straight beams of square cross-section which meet at right angles. It is featured prominently in the works of artist M.C. Escher, whose earlier depictions of impossible objects partly inspired it. (Image by MIT OCW.)

Alt text:
A Penrose triangle featuring the names Godel, Escher, and Bach on the sides.
Caption:
The Penrose triangle, also known as the tribar, is an impossible object. It appears to be a solid triangle made of three straight beams of square cross-section which meet at right angles. It is featured prominently in the works of artist M.C. Escher, whose earlier depictions of impossible objects partly inspired it. (Image by MIT OCW.)
Credit:
Image by MIT OCW.
A Penrose triangle featuring the names Godel, Escher, and Bach on the sides.