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A triangular based pyramid has 4 flat faces, 6 edges and 4 vertices.
a cone has one flat surface one vertex and no edge.
Pyramid
A quadrilateral based pyramid.
A square pyramid has no curved edges; it consists of eight edges in total, which are all straight. There are four edges forming the base (the square) and four edges connecting the apex to each vertex of the base. Thus, the square pyramid is characterized by its straight edges and flat faces.
A triangular pyramid is one with a triangle shaped base and triangular sides (4 sides, all of them identical), therefore it would only have 6 edges and 4 vertices There are eight edges in a triangular pyramid, and there are five vertices on a triangular pyramid. Edges are the places where two flat surfaces meet. Vertices are the places where three or more flat surfaces meet. * * * * * The sides of a triangular pyramid need not be identical.
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.
a pyramid with a triangular base has 4 faces. a pyramid with a square base has 5 faces.
A tetrahedron is a triangular based pyramid that has 4 faces, 6 edges and 4 vertices.
A triangular based pyramid would fit the given description.
A pyramid has a combination of flat and curved surfaces, but it typically consists of flat surfaces only. Specifically, a pyramid has a base that is a polygon (flat surface) and triangular faces that connect the base to a single apex, all of which are flat. Therefore, a standard pyramid has no curved surfaces. The total number of surfaces depends on the number of sides of the base polygon; for example, a square pyramid has five flat surfaces (one base and four triangular faces).
The flat surfaces on a pyramid (Geometry) are called faces. Therefore, a standard pyramid consists of four faces and a base (bottom).