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Gyaan Maths
CBSE · Class 6-10
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CBSE Maths · Class 7

Chapter 15: Visualising Solid Shapes

Name: ________________________
Date: ______________
Marks: ____ / 10

3D shapes; faces, edges, vertices; nets; oblique and isometric sketches; Euler's formula.

Questions

  1. Edges of a cuboid.
  2. Faces of a hexagonal prism.
  3. Verify Euler for a square pyramid.
  4. Faces of a cuboid.
  5. Edges of a cube.
  6. Vertices of a triangular pyramid.
  7. Faces of a cylinder.
  8. Number of nets of a cube.
  9. Which solid has 22 circular faces?
  10. Sphere has how many edges?

Extra Practice (Optional)

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

Answer Key (For Teachers)

  1. Answer: 1212.
    Working: Standard result.
  2. Answer: 88.
    Working: 22 hexagons + 66 rectangles.
  3. Answer: Verified.
    Working: F=5,V=5,E=8:5+5−8=2F=5, V=5, E=8: 5+5-8=2.
  4. Answer: 66
    Working: 66 rectangles.
  5. Answer: 1212
    Working: 1212.
  6. Answer: 44
    Working: 44.
  7. Answer: 33
    Working: Two flat + one curved.
  8. Answer: 1111
    Working: Standard result.
  9. Answer: Cylinder.
    Working: Cylinder.
  10. Answer: 00
    Working: No edges.
Gyaan Maths · CBSE Class 7 · Chapter 15
Gyaan Maths — CBSE Class 6-10, built for board-toppers.
v1.1 · Feb 2026