Question 9 of 16beginner🧠 RememberShort Answer2 marks

What shapes do you see in an icosahedron and a dodecahedron?

Correct Answer

Icosahedron: 20 faces, each face is a triangle.

Dodecahedron: 12 faces, each face is a pentagon.

All faces in each solid are identical regular shapes.

Exercise: Icosahedron and Dodecahedron | Q: 39 | (Page Page 12)
For More Understanding

Explanation

The chapter introduces 3D shapes: icosahedron (20 triangular faces) and dodecahedron (12 pentagonal faces). The names come from Greek: 'icosa' means 20 and 'dodeca' means 12, referring to the number of faces.

Solution Steps

  1. An icosahedron has 20 faces, each shaped as a triangle.

  2. A dodecahedron has 12 faces, each shaped as a pentagon.

  3. All faces in each solid are identical regular shapes.

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