A triangular prism has 4 triangular faces and 6 edges (3 for the base and other 3 to form the "point" of the pyramid.
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A tetrahedron is a triangular pyramid. It has six edges, four faces and four vertices.
A closed three-dimensional figure formed by four or more polygons that intersect only at their edges is called a polyhedron. It contains flat faces, straight edges, and sharp corners or vertices.
4 faces, 6 edges, 4 verticesFour faces, six edges and four vertices.
Rectangles are plane (2-dimensional) polygons. Only solid (3-dimensional) polyhedrons have faces.
a sphere has no edgesOf the solids with planar faces and line edges the tetrahedron has the fewest edges and faces. (Four faces and six edges)