All the faces of a pyramid MUST be polygons.
A triangle if it is a triangular based pyramid
a pyramid
A pyramid has a single polygonal face as its base.
Pyramid
24 faces including the base face
A polygon is a many sided 2-dimensional figure, and thus could never be "solid" Alternatively, it could be "one face that is a polygon". In that case the solid could be like a pyramid that morphs into a cone or a part-sphere. The base would be the one polygon, the other face would not.
A cylinder is a polygon that has circles as its base. A triangular pyramid is a polygon that has a triangle as its base.
Depends on the pyramid. A pyramid with a square (or quadrilateral) base would indeed have 8 edges, but a pyramid can have any other polygon as a base.Depends on the pyramid. A pyramid with a square (or quadrilateral) base would indeed have 8 edges, but a pyramid can have any other polygon as a base.Depends on the pyramid. A pyramid with a square (or quadrilateral) base would indeed have 8 edges, but a pyramid can have any other polygon as a base.Depends on the pyramid. A pyramid with a square (or quadrilateral) base would indeed have 8 edges, but a pyramid can have any other polygon as a base.
A pyramid can have 4 or more faces. A pyramid, with a n-sided polygon as base will have n+1 faces. The polygon with the least number of sides is a triangle and a triangular pyramid (tetrahedron) has 4 faces. A square based pyramid has 5 faces, and so on.
The figure described is a polyhedron. It is a tetrahedron known as a triangular pyramid.
pyramid
A polyhedron of which one face is a polygon of any number of sides, and the other faces are triangles with a common vertex.