Penrose triangle
Oscar Reutersvärd; independently Lionel & Roger Penrose
Three convincing corners. One impossible connection.
Impossible objects / 2024 drawing
Impossible crossed beams
Crossing solid beams refuse a consistent arrangement.
TRY THIS
View larger, then trace one connected edge all the way through the object. Compare the local joins with the whole shape.
THE IMAGE IN THIS ARCHIVE
Mabit1
Original file & attribution · CC BY-SA 4.0
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Download imageFrequently asked questions
What is Impossible crossed beams?
Crossing solid beams refuse a consistent arrangement.
What should I look for in Impossible crossed beams?
View larger, then trace one connected edge all the way through the object. Compare the local joins with the whole shape.
What explains Impossible crossed beams?
At each crossing, decide which beam should be nearer. Compare those decisions with the connected beam faces elsewhere in the figure.
Another way to see it
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Impossible cube
M. C. Escher; modern redraw by 4C and Belbury
A familiar cube frame acquires an impossible set of overlaps.
