Сфера

Autor:Силвия Станева, Steve Phelps

Imagine three non-collinear points on a sphere. (That is, they do not lie on a single great circle.) (a) How many great circles do they determine? (b) How many triangles do they form? (c) How are these triangles related?

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အခြေခံ data အခေါ်အဝေါ်များ
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