The Grey Labyrinth is a collection of puzzles, riddles, mind games, paradoxes and other intellectually challenging diversions. Related topics: puzzle games, logic puzzles, lateral thinking puzzles, philosophy, mind benders, brain teasers, word problems, conundrums, 3d puzzles, spatial reasoning, intelligence tests, mathematical diversions, paradoxes, physics problems, reasoning, math, science.


Shape Identification

Okay, for the first half of this puzzle, can you correctly identify each of the following shapes?

I'll admit we've had harder puzzles. If you're stuck, here's a hint: circle, triangle, square.

Now for the second half of the puzzle. Is there a solid three-dimensional shape that looks like each of the above shapes from a different direction? Assume that you're viewing an orthographic projection. That is, the three shapes represent how the object looks from an infinite distance, without perspective.

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