Journey to the Center of a Triangle: Watch the 1977 Digital Animation That Demystifies Geometry

In 1977, Bruce and Katharine Corn­well used a Tek­tron­ics 4051 Graph­ics Ter­mi­nal to cre­ate ani­mat­ed short films that demys­ti­fy geom­e­try. The films have now reemerged on the Inter­net Archive. Jour­ney to the Cen­ter of a Tri­an­gle appears above. You can also watch below Con­gru­ent Tri­an­gles, which fea­tures the mem­o­rable ‘Bach meets Third Stream Jazz’ musi­cal score. Enjoy them both. And find them in the Ani­ma­tion sec­tion of our col­lec­tion, 4,000+ Free Movies Online: Great Clas­sics, Indies, Noir, West­erns, Doc­u­men­taries & More

If you would like to sign up for Open Culture’s free email newslet­ter, please find it here. It’s a great way to see our new posts, all bun­dled in one email, each day.

If you would like to sup­port the mis­sion of Open Cul­ture, con­sid­er mak­ing a dona­tion to our site. It’s hard to rely 100% on ads, and your con­tri­bu­tions will help us con­tin­ue pro­vid­ing the best free cul­tur­al and edu­ca­tion­al mate­ri­als to learn­ers every­where. You can con­tribute through Pay­Pal, Patre­on, and Ven­mo (@openculture). Thanks!

Relat­ed Con­tent:

Watch “Geom­e­try of Cir­cles,” the Abstract Sesame Street Ani­ma­tion Scored by Philip Glass (1979)

The Com­plex Geom­e­try of Islam­ic Art & Design: A Short Intro­duc­tion

The Geom­e­try of Sound Visu­al­ized