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questionedithistorytranslations
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Globalquiz questions are translated by users for other users.

flag English language

How is this polygon called? (the one over the circles)
square
rhomboid
concave square
concave rhomboid
In this Ehrenstein illusion the sides of a square placed inside a pattern of concentric circles take an apparent curved shape. But in reality, the sides are straight.
Debbie Fox
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flag Polish language

Jak nazywa się figura widoczna na tle koncentrycznych okręgów?
kwadrat
romboid
kwadrat wklęsły
romboid wklęsły
To jest iluzja Ehresteina. Boki kwadratu wydają się wklęsłe, ale w rzeczywistości są proste.
globalquiz.org
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flag German language

Wie heißt die Figur vor dem Hintergrund konzentrischer Kreise?
Viereck
Rhomboid
Viereck konvex
Rhomboid konvex
Wie heißt die Figur vor dem Hintergrund konzentrischer Kreise? Platz Rhomboid quadratisch konkav Rhomboid konkav Das ist die Illusion von Ehrenstein. Die Seiten des Quadrats erscheinen konkav, aber in Wirklichkeit sind sie einfach.
Fabienne
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wikipedia → Viereck
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