a tetrahedron (aka three dimensional triangle)
A pyramid
A polyhedron is a 2 dimensional object. To have fasce it would have to be at least 3 dimensional. If you want to know what is a polyhedron with 4 sides, it's a quadrilateral THAT'S NOT QUITE RIGHT - actually it's completely false. Sorry, Ratty, a polyhedron is a 3 dimensional figure. Polygon refers to 2 dimensional figures. A pyramid with a triangular base is a polyhedron with 4 faces.
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A triangular pyramid.
The flat surface of any three dimensional object is called a face; a prism is a three dimensional object.A tetrahedron has 4 faces, a cube has 6 faces, an octahedron has 8 faces, etc.
A triangular-based pyramid
A cube is a three dimensional object with all faces squares. A cuboid is a three dimensional object with 4, or all 6, faces rectangles (and not square).
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No.Faces relate to 3-dimensional objects, for example a tetrahedron, a cube. They are the 2-dimensional shapes that make up the surface of a 3-dimensional objectA triangle can be a face though, for example, a tetrahedron is made up of 4 triangular faces.
Some triangular pyramids fit this description. They are called regular tetrahedrons.
A cuboid would fit the given description which has 6 faces, 12 edges and 8 vertices
A 4 dimensional object is called a Tesseract or "hybercube"Although if you want to get into string-theory and related advanced subject matters, the Tesseract is not a 4 dimensional object at all, but simply an advanced 3 dimensional object which only represents the 4th dimension; a visual aide if you will.