yes
Any triangle-based pyramid will do. If the sides are all the same length it's then called a tetrahedron.
A pyramid is a generic term for a 3-D polyhedron which has a polygonal base and triangular lateral faces that meet at an apex above the base. If the polygonal base has n sides, the pyramid has n+1 faces, n+1 vertices and 2n edges. A pyramid can, therefore have 4 or more vertices. So, there is bound to be a pyramid that will have the same number of vertices as a triangular prism (6).
yes
A frustum, which is a portion of a solid (typically a cone or a pyramid) that lies between two parallel planes cutting it, has a number of edges dependent on its base shape. For a frustum of a cone, there are three edges: two circular edges at the top and bottom and one curved edge connecting them. For a frustum of a pyramid, the number of edges is equal to the number of sides on the base shape plus the same number of edges connecting the top and bottom vertices. Thus, a frustum of a pyramid with an n-sided base has 3n edges.
That is correct
The given description fits that of a triangular based pyramid which has 4 faces, 6 edges and 4 vertices
there both flat
Any triangle-based pyramid will do. If the sides are all the same length it's then called a tetrahedron.
must all edges of semiregular polyhedron be the same length
A pyramid has 5 faces, 5 corners and 8 edges corners and faces are always the same
A pyramid is a generic term for a 3-D polyhedron which has a polygonal base and triangular lateral faces that meet at an apex above the base. If the polygonal base has n sides, the pyramid has n+1 faces, n+1 vertices and 2n edges. A pyramid can, therefore have 4 or more vertices. So, there is bound to be a pyramid that will have the same number of vertices as a triangular prism (6).
the simularites are they have the same vertices and edges
If the number of vertices is not the same as the number of faces, it cannot be a pyramid.
24
A cube
13 vertices. A pyramid always has the same number of faces and vertices.
No, a square pyramid has a square as a base end the four edges end in the peak. The cube has 8 corners, the square pyramid has 5.