Introduction to Projective Geometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
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A first look at Projective Geometry, starting with Pappus' theorem, Desargues theorem and a fundamental relation between quadrangles and quadrilaterals.
This video is part of the WildTrig series, which introduces Rational Trigonometry and applies it to many different aspects of geometry.
A screenshot PDF which includes WildTrig1 to 35 can be found at my WildEgg website here: http://www.wildegg.com/store/p114/product-wild-trig-A-screenshot-pdf