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The
world is three dimensional.
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These
are three views of an object: from the front, the top, and the side.
The object was once commonly found on commuter trains. What is it? |
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These
are the top and front blueprint views of an object. There are
no hidden lines and no curved surfaces. What is the side view? |
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These
are three views of an object carved from a block of wood. How can
that be? Where might you find such an object?
(An Eternal Golden Braid.)
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The
top object is a paper Dixie cup. This type was made to be folded
flat and placed in dispensers next to the water coolers on passenger trains. |
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The
carved wooden object can be found on
the cover of the book by
Douglas R. Hofstadter,
Gödel, Escher, and
Bach: an Eternal Golden
Braid. (Vintage, NY 1979.) |
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