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Gyaan Maths
CBSE · Class 6-10
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CBSE Maths · Class 8

Chapter 10: Visualising Solid Shapes

Name: ________________________
Date: ______________
Marks: ____ / 10

Nets of solids; views (top, front, side); Euler's formula.

Questions

  1. Edges of a cube.
  2. Faces of a hexagonal prism.
  3. Verify Euler for square pyramid (F=5,V=5,E=8F=5, V=5, E=8).
  4. Faces of a cube.
  5. Verify Euler for cube.
  6. Faces of a triangular prism.
  7. Faces of a square pyramid.
  8. Vertices of a hexagonal prism.
  9. Faces of an octahedron.
  10. Regular polyhedra count.

Extra Practice (Optional)

  • Draw the net of a cube.
  • Vertices of a triangular pyramid.
  • Is a sphere a polyhedron?

Answer Key (For Teachers)

  1. Answer: 1212.
    Working: Standard.
  2. Answer: 88.
    Working: 2+62 + 6.
  3. Answer: =2= 2.
    Working: 5+5−85+5-8.
  4. Answer: 66
    Working: 66.
  5. Answer: 22
    Working: F+V−E=6+8−12F+V-E = 6+8-12.
  6. Answer: 55
    Working: 55.
  7. Answer: 55
    Working: 1+4=51+4 = 5.
  8. Answer: 1212
    Working: 1212.
  9. Answer: 88
    Working: 88.
  10. Answer: 55
    Working: Five: tetrahedron, cube, octahedron, dodecahedron, icosahedron.
Gyaan Maths · CBSE Class 8 · Chapter 10
Gyaan Maths — CBSE Class 6-10, built for board-toppers.
v1.1 · Feb 2026