Its a tetrahedron
A regular polygon has equal sides and angles. A polygon has a surface area but a polyhedron has many faces as for example a pyramid.
A polygon with 20 sides is an icosagon.
yes it is because its faces are pentagons so it is a polygon
A rectangle has no curved faces; it has four straight edges and four right angles. It is a polygon with a flat, two-dimensional shape. If you are referring to a three-dimensional shape like a rectangular prism, it still does not have any curved faces, as all its faces are rectangular.
you add up the areas of all the faces on the polygon.
quadrilateral is a polygon with four sides or edges and four vertices or corners A pyramid is a solid figure with a polygonal base and triangular faces that meet at a common point. So no.
An internal angle of the polygon.
A polygon with four sides and four angles is a quadrilateral.
A cube is a polyhedron because it has many faces while a square is a polygon
A square polygon by definition has one face and it is square.
1
Faces.