Pentagon
Pentagon , 5 sided shape with 5 vertices Hendecagon , 12 sides and 12 vertices
Assuming that each vertex is used to connect exactly two sides, all two-dimensional shapes will have the same number of sides as vertices. So a shape with 4 sides will have 4 vertices and a shape with 3 sides will have 3 vertices. Think of a square (4 sides, 4 vertices) and a triangle (3 sides, 3 vertices).
A polygon with 5 sides/vertices is called a pentagon.
pentagon
A pentagon has five sides and five vertices
There is no such shape.
Pentagon
5
Pentagon
Pentagon , 5 sided shape with 5 vertices Hendecagon , 12 sides and 12 vertices
A shape with four sides has four vertices and a shape with three sides has three vertices, so a shape with four sides has more vertices than a shape with three sides.
A shape with four sides and three vertices does not exist in Euclidean geometry. In Euclidean geometry, a shape must have the same number of sides as vertices. Therefore, a shape with four sides would have four vertices.
A right square based pyramid.
Assuming that each vertex is used to connect exactly two sides, all two-dimensional shapes will have the same number of sides as vertices. So a shape with 4 sides will have 4 vertices and a shape with 3 sides will have 3 vertices. Think of a square (4 sides, 4 vertices) and a triangle (3 sides, 3 vertices).
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).