Exploring 2D and 3D Shapes in Geometry

The video tutorial introduces the concept of dimensions, explaining one-dimensional, two-dimensional, and three-dimensional figures. It uses a story about a boy named Saket to illustrate the concept of 3D. The tutorial further explains the properties of 3D shapes, such as faces, edges, and vertices, and provides examples of both 2D and 3D shapes, including cubes, cuboids, spheres, and more. The module aims to help learners understand the basic geometric concepts and differentiate between various dimensional figures.

What does 3D stand for?

• Three Directions

• Three Dimensions

• Three Distances

• Three Dynamics

Which of the following is a one-dimensional figure?

• Cube

• Line

• Square

• Triangle

What makes a figure two-dimensional?

• Length and Height

• Length and Breadth

• Breadth and Height

• Length, Breadth, and Height

What is a characteristic of two-dimensional figures?

• They have curved surfaces

• They have vertices

• They have length, breadth, and height

• They can be represented on a plane

What are the vertices of a solid shape?

• Its curved edges

• Its line segments

• Its corners

• Its flat surfaces

How many faces does a cube have?

• 4

• 6

• 8

• 12

How many edges does a triangular pyramid have?

• 12

• 8

• 6

• 4

Which figure has no vertices?

• Cube

• Cone

• Triangular Pyramid

• Cylinder

Which of the following is not a three-dimensional figure?

• Triangle

• Cylinder

• Sphere

• Cuboid

What distinguishes a solid shape from a plain figure?

• Solid shapes are always larger

• Solid shapes have only two dimensions

• Solid shapes have three dimensions

• Plain figures can exist in three dimensions