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Is a rectangular pyramid is a polyhedron?
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.
A what Is a solid with all flat surfaces enclosing a single region of space?
A polyhedron.
What is a polyhedron with all faces the same all faces are equilateral triangles and has eight faces?
tetrahedron
What is a polyhedron that has 6 faces all faces are congruent all faces are squares?
It's a cube.
What is a polyhedron that has eight faces and has all faces that are equilateral triangles?
octahedron
Why are the flat surfaces on a rectangular prism called faces?
The flat surfaces of all polyhedra are called faces and a rectangular prism is simply one kind of polyhedron.
Is every polyhedron a solid?
No. By definition a polyhedron has to have faces (flat surfaces), edges, and vertices. A sphere, hemisphere, and a cylinder are all solids but are not polyhedra.
Why is all the faces of a polyhedron flat?
It is a definitional requirement. If any face is not flat, then it is not a polyhedron.
Are all faces of a polyhedron flat?
Yes
Which solid shape has all flat faces?
A polyhedron.
What kind of polygon is a cube?
A cube is a solid figure called a polyhedron. A polyhedron is a solid figure with all flat faces. So a cone would be a solid figure but not a polyhedron becasue it has a curve and does not have all flat faces.
Which which solid figure that has 4 flat surfaces that are triangles Solid figures that has 4 flat surfaces that are triangles?
The solid figure that has 4 flat surfaces that are triangles is a tetrahedron. A tetrahedron is a polyhedron with four triangular faces, six straight edges, and four vertex corners. Each of the four faces of a tetrahedron is an equilateral triangle, making it a regular polyhedron.
Is a rectangular pyramid is a polyhedron?
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.
A what Is a solid with all flat surfaces enclosing a single region of space?
A polyhedron.
What is polyhedron's definition?
a 3d object made of 2d faces with all flat sides
Is the shape of the football polygon?
No because a polygon is a plane figure. A football is a bit like a polyhedron, but all the faces of a polyhedron must be flat and, because of inflation, those of a football are not.
What is a polyhedron whose faces are all equilateral tringles and it has eight faces?
An eight-face polyhedron is called an octahedron.
