![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
![Four-Sided Pyramid, Sol Lewitt, 1965, Sculpture/Structure | National gallery of art, Pyramids, Sculpture Four-Sided Pyramid, Sol Lewitt, 1965, Sculpture/Structure | National gallery of art, Pyramids, Sculpture](https://tagreen.files.wordpress.com/2010/06/pyramid.jpg)
Four-Sided Pyramid, Sol Lewitt, 1965, Sculpture/Structure | National gallery of art, Pyramids, Sculpture
![Sculpture titled 'Four-Sided Pyramid' by Sol LeWitt on display in the National Gallery of Art Sculpture Garden in Washington, D.C. USA on 14 May 2019 Stock Photo - Alamy Sculpture titled 'Four-Sided Pyramid' by Sol LeWitt on display in the National Gallery of Art Sculpture Garden in Washington, D.C. USA on 14 May 2019 Stock Photo - Alamy](https://c8.alamy.com/comp/TC2B6K/sculpture-titled-four-sided-pyramid-by-sol-lewitt-on-display-in-the-national-gallery-of-art-sculpture-garden-in-washington-dc-usa-on-14-may-2019-TC2B6K.jpg)