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What are three-dimensional figures that are not polyhedrons?
A figure that has a curved face or curved edge.
Why are some 3-dimensional shapes not polyhedrons?
Each face of a polyhedron must be a polygon: a flat surface bounded by straight lines. So, if any of the faces is curved, the shape is not a polyhedron.
What 3 dimensional figure does not have a curved surface?
cube
Are cones polyhedrons?
no because it has curved faces.
What are the different terms in solid mensuration?
1. Plane Figures- A flat, closed figure that is in a plane- A plane figure can be made of straight lines, curved lines, or both straight and curved lines.2. Solid Figures- The figures which occupy space are called solids.- Solids are three dimensional figures i.e., they have length, breadth & height.- There are two important facts related to solids-a. Every solid has a surface area. Some solids have plane surfaces, others have curved surfaces.b. Every solid has a 'bulk' & its bulk occupies some space.3. Surface area-It is the sum of areas of all visible (exposed) surfaces of a solid.4. Volume-It is the three dimensional space occupied by a solid, liquid or gas.5. Lateral surface area - is the sum of the surface areas of all its faces excluding the base.6. Total surface area - is the sum of the surface areas of all its faces including the base.
What are three-dimensional figures that are not polyhedrons?
A figure that has a curved face or curved edge.
Why is a three dimensional figure with curved surface not a polyhedron?
Because that is how a polyhedron is defined.
How is a sphere like a cylinder?
Both are 3-dimensional figures wiith a curved surface.
Why are some 3-dimensional shapes not polyhedrons?
Each face of a polyhedron must be a polygon: a flat surface bounded by straight lines. So, if any of the faces is curved, the shape is not a polyhedron.
Why are cylinders and cones not considered to be polyhedrons?
Cylinders and cones are not considered polyhedrons because they do not have flat faces, which is a defining characteristic of polyhedrons. Polyhedrons are three-dimensional shapes made up of flat surfaces, while cylinders and cones have curved surfaces. Additionally, polyhedrons have straight edges where faces meet, whereas cylinders and cones have curved edges. Therefore, cylinders and cones are classified as curved surfaces rather than polyhedrons.
Is a cone a polyhedron?
NO a cone is not a polyhedron as it has a curved surface. Similarly sphere and cylinders r 3D but not polyhedrons
What is a 3 dimensional figure with a curved surface?
Sphere
What 3 dimensional figure does not have a curved surface?
cube
Are cones polyhedrons?
no because it has curved faces.
What shape is three dimensional has a curved surface and has no edge?
sphere
What is the sum of areas of the faces or curved surface of the three dimensional object?
It is the total surface area.
What is a curved surface and a curved edge in geometry 5th grade level?
A curved surface is like imagining a sheet of paper that is bent or a flag waving in the wind. A curved edge is like an elastic stick bent in one(C curve) or more points(S curve). The curved surface beeing 3 dimensional(3D) and the curved edge 2 dimensional(2D) unlike the simple surface and edge which are 2D respectively 1D.
