Question 8: A Single Right Angle

作者：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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All Straight Angles Congruent
circl
coinciding lines
H2M 2014 P1 Q3
im.g.3.13.2 Tangled Triangles (15)

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多項式函數
幾何變換
雙曲線
幾何
作圖

Question 8: A Single Right Angle

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