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. 2020 Aug 30;11(4):2041669520937323. doi: 10.1177/2041669520937323

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© The Author(s) 2020

Creative Commons CC BY: This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 2. — Metzger’s Cross. In Panel A, the diagonal collinear segments complete each other amodally and appear such as in Panel B. Panels C and D illustrate two (out of many) line patterns that would elicit observer’s surprise after removal of the occluding rectangle. Redrawn from Metzger (1936/2006), Figure 138.