Proposed Problem
See complete Problem 249 at:
gogeometry.com/problem/p249_triangle_sides_medians_squares.htm
Level: High School, SAT Prep, College geometry
Post your solutions or ideas in the comments.
Showing posts with label Book II. Show all posts
Showing posts with label Book II. Show all posts
Sunday, February 15, 2009
Problem 249. Triangle sides, medians, squares
Thursday, February 12, 2009
Euclid's Elements Book II, Proposition 13: Law of Cosines
Acute Triangle
See complete illustration at:
gogeometry.com/geometry/euclid_elements_book_ii_proposition_13_cosines_law.htm
Level: High School, SAT Prep, College geometry
Post your solutions or ideas in the comments.
Labels:
acute,
altitude,
Book II,
Elements,
Euclid,
inner Napoleon triangle,
Law of Cosines,
Pythagoras,
Trigonometry
Euclid's Elements Book II, Proposition 12: Law of Cosines.
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.
Labels:
altitude,
Book II,
Elements,
Euclid,
Law of Cosines,
Pythagoras,
triangle,
Trigonometry
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