A triangle has only one face and, not surprisingly, its shape is a triangle.
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There are 2 with 1 at each end
A tetrahedron (4 faces) and an icosahedron (20).
Only one; a triangle is a 2D shape, not a 3D shape. Usually only 3D (or more) shapes are considered to have 'faces'.
2 shapes, a triangle, and a rectangle.since it is a prism, it is like a pyramid, 4 of the faces are triangles,but the base is a rectangle, hence the name rectangularprismtherefore, 2 shapes
They are all rectangles.