Question

How many surfaces are present in the given regular solid?

Hint:

A regular icosahedron has 20 triangular faces.

Answer 1

Step 1: Identifying the Solid.
The given regular solid is a polyhedron with triangular faces, and it appears to be a regular icosahedron. The icosahedron has 20 equilateral triangle faces.
Step 2: Conclusion.
Thus, the number of surfaces (faces) in the given polyhedron is \( 20 \).

\[ \boxed{20} \]