Pentagon , 5 sided shape with 5 vertices Hendecagon , 12 sides and 12 vertices
It is a 5 sided pentagon
A polygon with 5 sides/vertices is called a pentagon.
pentagon
A pentagon is a polygon that has 5 sides, 5 vertices and a flat face
A pentagon has five sides and five vertices
There is no such shape.
Yes. Two triangle touching corner-to-corner. There would be six sides, but only 5 vertices because one vertex is shared.
Pentagon
5
Pentagon , 5 sided shape with 5 vertices Hendecagon , 12 sides and 12 vertices
A right square based pyramid.
It is a 5 sided pentagon
Not a polyhedral shape. You need at least three vertices to define a plane shape. With 5 vertices, the maximum number of triplets you can get is 10 so there cannot be 11 faces.
1 + number of sides/vertices the base shape has A square-based pyramid has 5 vertices, for example.
A pentagonal pyramid (5 sides and 1 base) has 6 faces, 6 vertices, and 10 edges (5 between the sides and 5 with the base).
A quadrilateral based pyramid.