A polyhedron is closed a 3-dimensional figure whose faces are all polygons. The prefix "octa-" refers to eight and an octahedron is a polyhedron with 8 faces.
They are both 3 dimensional shapes with faces that are polygons.
a sphere
No. A square is a 2-dimensional figure. A cube is a 3-dimensional figure whose faces are all squares.
No. Like all polygons, a heptagon is a 2-dimensional closed figure.
A polyhedron is closed a 3-dimensional figure whose faces are all polygons. The prefix "octa-" refers to eight and an octahedron is a polyhedron with 8 faces.
It is a 3-dimensional shape whose faces are all polygons.
They are both 3 dimensional shapes with faces that are polygons.
Rectangles are plane (2-dimensional) polygons. Only solid (3-dimensional) polyhedrons have faces.
A 3 dimensional figure
a sphere
A polyhedron is a 3-dimensional shape whose faces are all polygons.
Many 3-d figures can have polygons for bases. If all ist faces are polygons then it is a polyhedron but it is possible to have 3-d figures with a polygonal base and non-polygonal faces.
That would be a cylinder, with the faces on each end.
A cube has onely square faces.
No. A sphere is a three dimensional shape which has no polygonal faces. Similarly an ellipsoid, a torus, a paraboloid, hyperboloid etc are 3-D shapes with no polygonal faces.
All of the polygons except the triangle