No. A 3D triangle would be a triangular based pyramid.
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A triangular prism or a triangular based pyramid
a triangular pyramid is a shape with 5 sides and looks like a triangle just 3d wall a square pyramid has 6 sides and is like a square just 3d
Square-based pyramid.
3D = Pyramid 2D = 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.