Question Paper
Class / Subject: Class 8 (ICSE) · Mathematics
Chapter: Chapter 19 — Chapter 19: Representing 3-D in 2-D
Time Allowed: 32 minutes
Max Marks: 16
1. What is a net? [1]
(A) A flattened pattern of a 3D solid
(B) A 3D solid itself
(C) A type of graph
(D) A type of chart
2. How many squares are in a cube's net? [1]
(A) Six
(B) Four
(C) Eight
(D) Two
3. What do isometric drawings maintain? [1]
(A) Relative proportions
(B) No specific proportions
(C) Only colours
(D) Only size, not shape
4. What paper is often used for isometric drawings? [1]
(A) Isometric dot or grid paper
(B) Only lined paper
(C) Only blank paper
(D) No paper is needed
5. What do oblique sketches show? [1]
(A) One true face with angled depth
(B) Only flat, 2D shapes
(C) No depth at all
(D) Only colours
6. Why represent 3D shapes in 2D? [1]
(A) To visualise and communicate structures
(B) No reason
(C) It's not useful
(D) Only for decoration
7. Where is this skill useful? [1]
(A) Design and construction
(B) Nowhere useful
(C) Only in art class
(D) Only in maths tests
8. What can be folded to form a 3D solid? [1]
(A) A net
(B) An isometric drawing only
(C) An oblique sketch only
(D) Nothing specific
9. What is a net? [1]
(A) A flattened pattern of a 3D solid
(B) A 3D solid itself
(C) A type of graph
(D) A type of chart
10. How many squares are in a cube's net? [1]
(A) Six
(B) Four
(C) Eight
(D) Two
11. What do isometric drawings maintain? [1]
(A) Relative proportions
(B) No specific proportions
(C) Only colours
(D) Only size, not shape
12. What paper is often used for isometric drawings? [1]
(A) Isometric dot or grid paper
(B) Only lined paper
(C) Only blank paper
(D) No paper is needed
13. What do oblique sketches show? [1]
(A) One true face with angled depth
(B) Only flat, 2D shapes
(C) No depth at all
(D) Only colours
14. Why represent 3D shapes in 2D? [1]
(A) To visualise and communicate structures
(B) No reason
(C) It's not useful
(D) Only for decoration
15. Where is this skill useful? [1]
(A) Design and construction
(B) Nowhere useful
(C) Only in art class
(D) Only in maths tests
16. What can be folded to form a 3D solid? [1]
(A) A net
(B) An isometric drawing only
(C) An oblique sketch only
(D) Nothing specific