Yes, it is.
Yes because polyhedron means many faces
Yes. A polyhedron is a geometric shape with flat surfaces and straight edges, so a a pyramid with a rectangular base qualifies as a polyhedron. It is however not a regular polyhedron, which would require all the faces to be the same shape and size. To change your pyramid to a regular polyhedron you'd have to turn it into a tetrahedron.
It is a polyhedron with a pentagonal base. To every side of the pentagon are attached triangles that meet at a single point in a plane higher than the pentagon (if it is a skew pyramid, the apex will not be above the pentagon).
no not all pyramids are polyhedron because each pyramid has a different shape. so no each pyramid is not a polyhedron * * * * * Yes they are.
A polyhedron as for example a pyramid
Yes because polyhedron means many faces
Yes. A polyhedron is a geometric shape with flat surfaces and straight edges, so a a pyramid with a rectangular base qualifies as a polyhedron. It is however not a regular polyhedron, which would require all the faces to be the same shape and size. To change your pyramid to a regular polyhedron you'd have to turn it into a tetrahedron.
It is a polyhedron with a pentagonal base. To every side of the pentagon are attached triangles that meet at a single point in a plane higher than the pentagon (if it is a skew pyramid, the apex will not be above the pentagon).
no not all pyramids are polyhedron because each pyramid has a different shape. so no each pyramid is not a polyhedron * * * * * Yes they are.
A polyhedron as for example a pyramid
a square pyramid
A polyhedron with a polygon base and triangular sides that all meet at a common vertex is known as a pyramid. The base can be any polygon, such as a triangle, square, or pentagon, and the triangular sides are called lateral faces. The vertex where all the triangular faces converge is referred to as the apex of the pyramid. Each type of pyramid is named based on the shape of its base, such as a triangular pyramid or a square pyramid.
No, the base of a pyramid must be a 2-dimensional shape so no polyhedron can be its base.
Pentagon 2d shape is a pentagon 3d object is a pyramid.
A polyhedron with 5 faces could be called a pentahedron, but a more common name would be a quadrilateral pyramid. A square pyramid is a special case of such a shape.
a pentagonal pyramid
The base would be a pentagon, while the faces would be triangles.