The number of edges is 9. The correct option is B.
What are vertices?
A vertex is a point in geometry where two or more curves, lines, or edges come together. Vertices are frequently represented by the letters P, Q, R, or S. As a result of this definition, vertices are the intersection of two lines that create an angle as well as the corners of polygons and polyhedra.
The given figure is in two parts. The bottom is a rectangular prism and the top is a pyramid with a square base.
The number of the edges will be calculated as below:-
Total edges = Number of the edges of Pyramid + Number of the edges of the prism
Total edges = (5 - 4) + 8
Total edges = 9
Therefore, the number of edges is 9. The correct option is B.
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