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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.
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.
What polyhedron has eight sides all of the faces are equilateral triangles and all of the faces are the same?
What polyhedron has eight sides and all of the are equilateral triangle?
