The following figure is a

# The following figure is a 1. A
Convex polyhedron
2. B
Concave polyhedron
3. C
regular polyhedron
4. D
polygon

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### Solution:

The given figure is We know that convex polyhedron is one in which the line segment connecting on the surface of a polyhedron totally sits within or on the polyhedron. Otherwise, it is a concave polyhedron.
In the given figure, let us consider two points A & B.
Join the points AB. We get a line segment AB. The line AB is not totally contained within or on the polyhedron.
So, it is a concave polyhedron
The correct option is (2).

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