A triangular prism or a triangular based pyramid
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triANGLE
3D = Pyramid 2D = Triangle
No. A triangle is a 2-dimensional figure, a prism is 3-dimensional.
There is no such thing as a 3D triangle.
a parrollellogram * * * * * No, a parrollollogram - or even a parallelogram - is not a 3d shape! The correct answer is a tetrahedron or a triangle based pyramid.