Question 8: A Spherical Right Triangle

Autore:Steve Phelps

In a spherical triangle, with exactly one right angle, (a) What are the possibilities for the two oblique (nonright) angles? (b) How can we think about the sides of the triangle?

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Sum of Squares: Proof without Words
Mondrian's Puzzle
Parallelogram Anatomy

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edited pty of circle files
true/circumcenter2.ggb
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Bài tập 37a trang 68

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