INTRODUCTION: PLANE FIGURES AND SOLID SHAPES In this chapter, you will classify figures you have seen in terms of what is known as dimension. In our day to day life, we see several objects lik
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FACES, EDGES AND VERTICES Do you remember the Faces, Vertices and Edges of solid shapes, which you studied earlier? Here you see them for a cube: The 8 corners of the cube are its vertices.
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NETS FOR BUILDING 3-D SHAPES Take a cardboard box. Cut the edges to lay the box flat. You have now a net for that box. A net is a sort of skeleton-outline in 2-D [Fig13.4 (i)], which, when folded
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DRAWING SOLIDS ON A FLAT SURFACE Your drawing surface is paper, which is flat. When you draw a solid shape, the images are somewhat distorted to make them appear three-dimensional. It is a visual
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Isometric Sketches Have you seen an isometric dot sheet? (A sample is given at the end of the book). Such a sheet divides the paper into small equilateral triangles made up of dots or lines. To dr
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Visualising Solid Objects Here are some activities you could try in your free time to help you visualise some solid objects and how they look. Take some cubes and arrange them as shown in Fig 13.16
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One Way to View an Object is by Cutting or Slicing Slicing game Here is a loaf of bread (Fig 13.20). It is like a cuboid with a square face. You ‘slice’ it with a knife. When y
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Another Way is by Shadow Play A shadow play Shadows are a good way to illustrate how three-dimensional objects can be viewed in two dimensions. Have you seen a shadow play? It is a form o
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A Third Way is by Looking at it from Certain Angles to Get Different Views One can look at an object standing in front of it or by the side of it or from above. Each time one will get a different
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