Question

Define i) Polyhedron ii) Regular Polyhedron iii) Prism iv) Pyramid
with examples.
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Answer 1

Answer:

We have learnt that the figures having a length only are known as the one-dimensional figure. Figures having length and breadth are known as the 2-dimensional figures. A polygon, a circle, etc are 2-d figures. Object and shapes having length breadth and height are known as 3-d shape.

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Answer 2

Answer:

abpolyhedron

a polyhedron (plural polyhedra or polyhedrons) is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices.

regular Polyhedron

A regular polyhedron is a polyhedron whose symmetry group acts transitively on its flags. A regular polyhedron is highly symmetrical, being all of edge-transitive, vertex-transitive and face-transitive.

prism

A prism is a polyhedron comprising an n-sided polygon base, a second base which is a translated copy of the first, and n other faces, necessarily all parallelograms, joining corresponding sides of the two bases. All cross-sections parallel to the bases are translations of the bases.

pyramid

a pyramid is a polyhedron formed by connecting a polygonal base and a point, called the apex. Each base edge and apex form a triangle, called a lateral face.

Step-by-step explanation:

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