I.16 Exterior Angle of a Triangle is Greater Than the Opposite Interior Angles Proof - видео

Support my channel with this special custom merch! Learn this proposition with interactive step-by-step here: visit my site: In proposition 16 of Euclids Elements we prove that if any side of a triangle is extended then the exterior angle is always greater than either of the opposite interior angles. Playlist of Euclids Elements in link below: ,
Источник видео: RuTube.ru (Обучение)