1. The Saccheri Quadrilateral
The Saccheri Quadrilateral Saccheri was a Jesuit priest who lived from 1667 to 1733. Before he passed away he published a book entitled Euclides ab omni nvo vidicatus. (Euclid Freed of Every Flaw). Saccheri suggested ... line through the point parallel to the given line. The third is more than one line through the point parallel to the given line. Saccheri investigated the summit angles of a quadrilateral; his result depended on the postulate chosen. He tried to find a contradiction to prove that Euclids fifth postulate was true. He assumed the negation of the parallel Postulate and tried .....
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- Grade Level: High School