Ames trapezoid
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English[edit]
Etymology[edit]
Discovered by American ophthalmologist Adelbert Ames, Jr. in 1947.
Noun[edit]
Ames trapezoid (plural Ames trapezoids)
- An optical illusion in which a trapezoid, subdivided into squares to look like a paned window, and made to rotate, appears to be a rectangle.
- Synonym: Ames window