Class 7 Mathematics

Chapter 15: Visualising Solid Shapes

NCERT Textbook Questions & Answers

Question 1

What is the difference between a 2D shape and a 3D shape?

Answer:

2D shapes have only length and breadth.
Examples: Square, Rectangle, Circle

3D shapes have length, breadth, and height.
Examples: Cube, Cuboid, Sphere

✅ Final Answer:
2D shapes are flat, while 3D shapes are solid.

Question 2

Name any three solid shapes you see in daily life.

Answer:

Examples of solid shapes:

• Ball → Sphere
• Dice → Cube
• Book → Cuboid

✅ Final Answer: Sphere, Cube, Cuboid

Question 3

What are faces, edges, and vertices?

Answer:

• Face: Flat surface of a solid shape
• Edge: Line where two faces meet
• Vertex: Corner point where edges meet

Example: A cube has 6 faces, 12 edges, and 8 vertices.

✅ Final Answer: Faces, edges, and vertices are parts of a solid shape.

Question 4

How many faces, edges, and vertices does a cube have?

Answer:

• Faces = 6
• Edges = 12
• Vertices = 8

✅ Final Answer: A cube has 6 faces, 12 edges, and 8 vertices.

Question 5

What is a net of a solid shape?

Answer:

A net is a flat shape which can be folded to form a 3D solid.

Example: A cube net has 6 squares.

✅ Final Answer: A net is a flat pattern used to make a solid shape.

Question 6

Name a solid shape that has:
(a) No edges
(b) Only one curved surface

Answer:

(a) Sphere

(b) Sphere

Explanation:
A sphere has no flat faces, edges, or vertices.

✅ Final Answer: (a) Sphere    (b) Sphere

Question 7

What do you understand by top view, side view, and front view?

Answer:

• Top view: View from above
• Side view: View from the side
• Front view: View from the front

Example: A cube looks like a square from all views.

✅ Final Answer: Different views show how an object looks from different sides.

---

Shaktimatha CBSE Learning
Class 7 Mathematics – Chapter 15
NCERT Textbook Questions & Answers

⬅️ Back to Class 7 Maths Library