Equations and Their Origins - α + β + γ = 180° Starring Euclid

Explore the historical origins of one of geometry's most fundamental equations in this 18-minute lecture from the University of Oxford. Delve into the mathematical legacy of Euclid, whose geometric principles have been taught in universities and schools for over 2000 years, focusing specifically on the triangle angle sum theorem that states the sum of interior angles in any triangle equals 180 degrees. Discover how this ancient mathematical truth has endured through millennia and learn why even Lewis Carroll was reportedly displeased when alternative geometric systems were introduced. Gain insight into the fascinating intersection of mathematical history and geometric principles through Robin Wilson's engaging presentation on equations that have shaped mathematical education for centuries.