File:Convex and Concave.JPG

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Non-free media information and use rationale true for Convex and Concave
Description	Convex and Concave by M. C. Escher. lithograph, 1955.
Source	Official M. C. Escher website
Article	Convex and Concave
Portion used	It represents the complet work.
Low resolution?	It is a low-resolution image.
Purpose of use	It illustrates an educational article about the lithograph print that this image represents.
Replaceable?	It is not replaceable with an uncopyrighted or freely copyrighted image of comparable educational value.
Fair useFair use of copyrighted material in the context of Convex and Concave//en.wikipedia.org/wiki/File:Convex_and_Concave.JPGtrue