Obtuse Triangle
See complete illustration at:
gogeometry.com/geometry/euclid_elements_book_ii_proposition_12_cosines_law.htm
Level: High School, SAT Prep, College geometry
Post your solutions or ideas in the comments.
Thursday, February 12, 2009
Euclid's Elements Book II, Proposition 12: Law of Cosines.
Labels:
altitude,
Book II,
Elements,
Euclid,
Law of Cosines,
Pythagoras,
triangle,
Trigonometry
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