Q: How many edges are there in a pentahedron?

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5, that is what the penta part of pentahedron means.

It has five faces in all. How many are lateral depends on the configuration of the pentahedron.

None. A square based pyramid is a pentahedron.

Yes because a triangular prism has 5 faces and also it has 9 edges and 6 vertices

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It has 5 faces

A pentahedron is a closed 3-dimensional shape with five faces, each of which is a polygon.It can have 5 vertices and 8 edges (quadrilateral based pyramid) or 6 vertices and 9 edges (triangular prismoid).

It can have 8 or 9 edges - depending on its configuration.

In geometry, a pentahedron is a polyhedron with five faces. That can either be a square pyramid with 5 vertices, 8 edges and 5 faces or a triangular prism with 6 vertices, 9 edges and 5 faces.

A pentahedron can have 5 or six vertices.

A pentahedron can have five or six vertices.

5, that is what the penta part of pentahedron means.

It has five faces in all. How many are lateral depends on the configuration of the pentahedron.

A four-sided pyramid (a type of irregular pentahedron) has 8 edges, 5 vertices and 5 faces.

A triangular prism has 6 vertices, 5 faces and 9 edges