Which of the following can be the base of a pyramid?
(a) Line segment
(b) Circle
(c) Octagon
(d) Oval
Octagon
Base of a pyramid.
The explanation for the correct option:
Option (C). Octagon
Determine the base of a pyramid.
A pyramid is defined as a three-dimensional polyhedron with a polygonal base and lateral faces are triangles that meet above at a common point above the base.
Consider the diagram for the octagonal pyramid as shown below:
From the diagram, observe that the base of the pyramid can possibly be an octagon because it is a polygon.
An octagon is a polygon with sides, angles, vertices and edges, where all of the sides are connected end to end to form a shape.
The diagram of the octagon is shown below:
Hence, option (C) is correct.
The explanation for the incorrect options:
Options (A), (B), and (D): The line segment, circle, and Oval have no polygon as a base on which polyhedron can be formed by joining the lateral surface on the side meeting at a common point above the base.
Therefore, options (A), (B), and (D) are incorrect Option
Hence, option (C) is correct.