How To Draw Solids On A Flat Surface?

How To Draw Solids On A Flat Surface?

Drawing solids on a flat surface

When we draw a solid shape, the images are somewhat distorted to make them appear three-dimensional as our drawing surface is paper which is flat. It is a visual illusion. There are two methods to draw 3-D figures :

  1. Oblique Sketches
  2. Isometric Sketches.

What is an oblique sketch?

Oblique Sketches
If we look at figure, just by look we can say that it is a figure of cube although its all edges are not equal. This type of sketch by which we just get the idea of the given solid is called the oblique sketch.
How To Draw Solids On A Flat Surface 1Let us learn the technique for drawing a cube.
How To Draw Solids On A Flat Surface 2Similarly, we can draw a cuboid on squared graph sheet:
How To Draw Solids On A Flat Surface 3

What is the meaning of isometric drawing?

Isometric Sketches
An isometric sheet is a special sheet on which dots are formed on a pattern of equilateral triangle. On isometric sheet we can draw sketches in which measurements also agree with those of a given solid.
How To Draw Solids On A Flat Surface 4The lines on the paper are in the three directions, each of which represents a dimensions. The lines up and down represent the vertical dimension (height). The other two dimensions represent the horizontal dimensions (length and breadth). Therefore to draw a 3-D figure, we use a isometric graph sheet or isometric dot paper.

A dot sheet, on which dots are marked at equal distances is also used to draw a 3-D figure. Such a sheet is called isometric dot sheet.
How To Draw Solids On A Flat Surface 5A sample of each one is given below:
How To Draw Solids On A Flat Surface 6Let us draw cubes and cuboids using isometric dot paper or isometric graph sheet:
How To Draw Solids On A Flat Surface 7We can make other shapes also by using isometric sheets.

Example: In following figures find the length, breadth and height of shapes.
How To Draw Solids On A Flat Surface 8Solution:
Clearly in fig.(i) length = 2 units, breadth = 1 unit,
height = 2 units.
In fig.(ii) length = 3 units,   breadth = 2 units
height is varying, from front it is 2 units and in back it is 1 unit.

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