Three-Dimensional Figures Quiz - CBSE Class 9 Mathematics

Free practice quiz: Three-Dimensional Figures (CBSE Class 9 Mathematics). 17 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is a three-dimensional figure?

   1. A shape with only length
   2. A shape with length and width
   3. A shape with length, width, and height
   4. A flat, two-dimensional shape
   Show answer

   Answer: C. A shape with length, width, and height

   A three-dimensional figure is a geometric shape that has three dimensions: length, width, and height.

2. Which shape is not considered a polyhedron?

   1. Cuboid
   2. Pyramid
   3. Sphere
   4. Prism
   Show answer

   Answer: C. Sphere

   A polyhedron is a solid shape with flat polygonal faces, straight edges, and vertices. A sphere has no flat faces, so it is not a polyhedron.

3. What distinguishes a regular polyhedron from other polyhedra?

   1. It has curved surfaces
   2. All its faces are regular polygons
   3. It has an odd number of edges
   4. Its faces can be different polygons
   Show answer

   Answer: B. All its faces are regular polygons

   A regular polyhedron is a three-dimensional solid where all the faces are regular, congruent polygons arranged symmetrically.

4. Can you determine the shape if it has 12 edges, 6 faces, and 8 vertices?

   1. Cuboid
   2. Square Pyramid
   3. Triangular Prism
   4. Hexagonal Prism
   Show answer

   Answer: A. Cuboid

   A cuboid, or rectangular prism, has 12 edges, 6 faces (each a rectangle), and 8 vertices.

5. What is the formula for the volume of a cone?

   1. 1/3 x π x r^2 x h
   2. 1/2 x π x r x h
   3. 1/4 x π x r^2 x h
   4. π x r^2 x h
   Show answer

   Answer: A. 1/3 x π x r^2 x h

   The volume of a cone is given by one-third of the base area (πr^2) times the height (h), or V = 1/3 x π x r^2 x h.

Browse all Surface Areas and Volumes quizzes