Q: Do all pyramids have five or more vertices?

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All triangles have exactly 3 vertices

All pyramids are three-dimensional shapes. The number of vertices depends upon the shape of its based, which doesn't have to be a square or rectangle. The number of vertices is equal to n+1 , where n is the number of sides in the base polygon.

no

A polygon can have three or more edges and exactly the same number of vertices. All polygons have one face.

no

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If you count all the corners (vertices), That is five!

All triangles have exactly 3 vertices

All pyramids are three-dimensional shapes. The number of vertices depends upon the shape of its based, which doesn't have to be a square or rectangle. The number of vertices is equal to n+1 , where n is the number of sides in the base polygon.

Not exactly. A frustum would be a pyramid with the apex cut off. A truncated pyramid would be a pyramid with all vertices cut off.

no

For all polyhedra: vertices + faces = edges + 2 The given fact is: edges = vertices + 10 → vertices + faces = vertices + 10 + 2 → faces = 12

Most 2 dimensional shapes (all polygons) have 3 or more vertices. Most 3-dimensional shapes (polyhedra) have 4 or more vertices.

There are more than 8 square based pyramids, so it is not clear which ones you are thinking of.

In two dimensions, all sorts of triangles. In 3 or more dimensions there is no specific name for shapes with three vertices.

vertices is just a more complicated way of saying corners So if you count all the corners of a cube they equal 8

A polygon can have three or more edges and exactly the same number of vertices. All polygons have one face.

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.