All triangles have three altitudes.
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a cylinder have o verticals and 2 edges and 3 faces im positive like duhhh
1
A triangle has three sides.
A cone has two faces and one edge. The question does not specify vertical what so it is not possible to answer that part of the question.
In an equilateral triangle: 3 In an isosceles triangle: 1 In a scalene triangle: 0