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, 1,150 Free Movies Online: Great Classics, Indies, Noir, Westerns, etc.
Would you like to support the mission of Open Culture? Please 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.