Penrose triangle
Oscar Reutersvärd; independently Lionel & Roger Penrose
Three convincing corners. One impossible connection.
Impossible objects / 2024 drawing
Impossible pentagon
Five plausible corners form an impossible pentagonal frame.
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
Ibrahim Muizzuddin
Original file & attribution · CC0
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Download imageFrequently asked questions
What is Impossible pentagon?
Five plausible corners form an impossible pentagonal frame.
What should I look for in Impossible pentagon?
View larger, then trace one connected edge all the way through the object. Compare the local joins with the whole shape.
What explains Impossible pentagon?
Follow the beam faces through the five turns. The shaded parts invite one continuous solid interpretation even when their connections cannot all hold together.
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.
