Three dimensional geometry - Computational Geometry - Prof N J Wildberger - Lecture 3 of 10 - Video-lecture

Video-lecture, Computational Geometry

Description: We introduce the basics of rational trigonometry, first in the affine and then in the projective setting, using the notions of quadrance and spread instead of distance and angle. (Quadrance can be thought of as the square of the distance, and spread the square of the sin of an angle; both notions come in an affine and a projective flavour.)
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