Journey to the Center of a Triangle

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 Congruent Triangles, which features the memorable 'Bach meets Third Stream Jazz' musical score. Enjoy.


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