Class 07 Project : Visualizing solid shapes

 Project : Visualizing solid shapes

Objective: 

Drawing cubes and cuboids.

Materials Required: 

Some sheets of isometric dot paper, sketch pen, pen, pencil, etc.

Procedure:

 I. To draw a cube of given dimensions (say a cube of edge 3 cm)

(In an isometric drawing, the measurements also agree with those of the solid.)

Take an isometric dot paper and draw two line segments AB and BC as shown below. 

Since the edge of the cube is 3 cm, we join four dots along each line to get the length of each line as 3 cm.

2. Now, draw three vertical lines AD, BE and CF as shown below. Here again, we join 4 dots along each line to get the length of each line as 3 cm.

3. Finally, join DE, EF. Also, draw DG || EF and FG || ED. The solid so obtained is a cube of edge 4 cm. Using a ruler measure each edge of the cube and verify.

You can also draw the cube by interchanging the steps 1 and 3 as shown below.

II. To draw a cuboid of given dimensions (say a cuboid of 4 cm x 2 cm x 3 cm)

1. Take an isometric dot paper and draw two line segments AB and BC as shown below. Here AB = 4 cm and BC = 2 cm. 

2. Now, draw three vertical line segments AD = BE = CF = 3 cm as shown below.

3. Finally, join DE and EF. Also, draw DG || EF and 

FG || ED. The solid so obtained is a cuboid of dimensions 4 cm x 2 cm x 3 cm. Measure each edge of the cuboid and verify.