Square cupola

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What Wikipedia says

In geometry, the square cupola (sometimes called lesser dome) is a cupola with an octagonal base. In the case of all edges being equal in length, it is a Johnson solid, a convex polyhedron with regular faces.

Excerpt from the Wikipedia article “Square cupola”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: This image was created with POV-Ray. Source: en.wikipedia (del) (cur) 05:58, 29 August 2005 . . Riumplus (Talk) . . 512x512 (47370 bytes) (Losslessly recompressed the image, shrinking file size by 11%) (del) (rev) 06:59, 3 November 2004 . . AndrewKepert (Talk) . . 512x512 (53444 bytes) (Johnson solid #4) Johnson solid #4 Another attempt at using user:Cyp's w:en:User:Cyp/Poly.pov povray macros to automatically find faces and edges. I will update the source once I have a few more Johnson solids under control. See talk:Johnson solid for progress., CC BY-SA 3.0, via Wikimedia Commons.