Question 11 of 16intermediate💡 UnderstandShort Answer2 marks

How many faces meet at a vertex (point)? (Icosahedron and Dodecahedron)

Correct Answer

Icosahedron: 5 triangular faces meet at each vertex.

Dodecahedron: 3 pentagonal faces meet at each vertex.

Exercise: Icosahedron and Dodecahedron | Q: 41 | (Page Page 12)
For More Understanding

Explanation

The chapter guides students to observe the structure of these polyhedra. In an icosahedron, 5 triangles come together at each vertex. In a dodecahedron, 3 pentagons meet at each vertex. This is consistent at every vertex of each solid.

Solution Steps

  1. In an icosahedron, 5 triangular faces meet at each vertex.

  2. In a dodecahedron, 3 pentagonal faces meet at each vertex.

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