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Is a sphere a polyhedron?
No, a sphere is not a polyhedron.A polyhedron is a three-dimensional geometric figure whose sides are polygons.A regular polyhedron is a polyhedron whose faces are all congruent regular polygons.
Why is a three dimensional figure with curved surface not a polyhedron?
Because that is how a polyhedron is defined.
What is the name of a 3D 3 sided shape?
There is no polyhedron with only three sides - a polyhedron being a 3-D shape with plane sides. Once you remove the restriction of plane sides you get several options, some of which are: A cylinder or a cylindrical shape with partial spheres at each end (like a medicine capsule). A segment of a torus (a doughnut with a chunk cut out of it). A spherical wedge - like a segment of a round cheese (that is, real cheese, not the processed plastic that some people consider cheese).
What is 1 polyhedron?
a 3d objet with all flat sides
What is a polyhedron with 5 faces?
A Pyramid; Four sides and the base.
What is the difference between a polyhedron and a non polyhedron?
A polyhedron is a three-dimensional solid with flat faces, straight edges, and sharp corners, while a non-polyhedron does not have these characteristics. Polyhedra are made up of polygons that enclose a single region of space, while non-polyhedra may have curved faces or intersecting edges. In mathematical terms, a polyhedron satisfies Euler's formula (V - E + F = 2), where V is the number of vertices, E is the number of edges, and F is the number of faces, while a non-polyhedron does not.
Do 20 equal sides form a polyhedron?
No. A polyhedron is 3 dimensional. You have a regular polygon, regular because the sides are equal. If you asked about 20 surfaces, then it would be a polyhedron.
What is the name of a polyhedron having 7 sides?
Heptahedron.
How many sides does a polyhedron have?
A polyhedron is a solid shape with many sides. The word "polyhedron" does not specify a number of sides.
What is non-polyhedron?
A polyhedron has "many sides" (by definiton). The only 3-D shape which does not have "many sides" is a sphere (which technically only have one "side").
What are the flat sides of a polyhedron?
They are the faces of the polyhedron.
A polyhedron with two congruent sides?
It is a polyhedron with two congruent sides: nothing more, nothing less.
Why is a rectangle polyhedron not regular polyhedron?
The sides of a rectangle are not all equal so a rectangle is not a regular polygon. And, as a consequence, any 3-dimensional shape made from rectangles cannot be a regular polyhedron.
Why decahedron is not a regular polyhedron?
It is not a regular polyhedron because it has unequal sides
What is the name of a polyhedron that has 5 sides?
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.
What is a polyhedron which has 2 equal side 2 equal angles and 3 vertices called?
How many sides does it have altogether? If it just has the 2 angles and side and 3 corners, there is no polyhedron with that discription.
What is a polyhedron and a prism that has 2 bases are hexagons and other faces are rectangles?
No polyhedron has five sides as a pentagon and a hexagon has six sides
