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Q.

Which of the following 3D shapes does not have a vertex?


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a

Pyramid

b

Prism

c

Cone

d

Sphere 

answer is D.

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Detailed Solution

Given four solid shapes, we need to tell which one of them has a vertex.
We know that vertex is defined as the point of intersection of the edges.
Since a sphere has only one curved face therefore it has no vertex and no edges.
And pyramids, prisms, and cones have more than one edge.
Hence, option (4) is correct.
 
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