![roomful of teeth on Twitter: "four-sided pyramid (1999) sol lewitt national gallery sculpture garden washington, dc https://t.co/Hwm972I9yb" / Twitter roomful of teeth on Twitter: "four-sided pyramid (1999) sol lewitt national gallery sculpture garden washington, dc https://t.co/Hwm972I9yb" / Twitter](https://pbs.twimg.com/media/C5DRumgUoAA8d8I.jpg:large)
roomful of teeth on Twitter: "four-sided pyramid (1999) sol lewitt national gallery sculpture garden washington, dc https://t.co/Hwm972I9yb" / Twitter
![ipernity: Four-Sided Pyramid by Sol Lewitt in the National Gallery Sculpture Garden, September 2009 - by LaurieAnnie ipernity: Four-Sided Pyramid by Sol Lewitt in the National Gallery Sculpture Garden, September 2009 - by LaurieAnnie](http://cdn.ipernity.com/134/48/05/24224805.eb4309cb.640.jpg?r2)
ipernity: Four-Sided Pyramid by Sol Lewitt in the National Gallery Sculpture Garden, September 2009 - by LaurieAnnie
![Sculpture Titled `Four-Sided Pyramid` by Sol LeWitt on Display in the National Gallery of Art Sculpture Garden in Washington, D.C Editorial Image - Image of garden, outside: 149655145 Sculpture Titled `Four-Sided Pyramid` by Sol LeWitt on Display in the National Gallery of Art Sculpture Garden in Washington, D.C Editorial Image - Image of garden, outside: 149655145](https://thumbs.dreamstime.com/z/sculpture-titled-four-sided-pyramid-sol-lewitt-display-national-gallery-art-sculpture-garden-washington-d-c-149655145.jpg)
Sculpture Titled `Four-Sided Pyramid` by Sol LeWitt on Display in the National Gallery of Art Sculpture Garden in Washington, D.C Editorial Image - Image of garden, outside: 149655145
![Four CMG array in a three-sided pyramid orientation (three sides and... | Download Scientific Diagram Four CMG array in a three-sided pyramid orientation (three sides and... | Download Scientific Diagram](https://www.researchgate.net/publication/244490588/figure/fig1/AS:532420843798528@1503950429730/Four-CMG-array-in-a-three-sided-pyramid-orientation-three-sides-and-one-on-bottom.png)