1. 2-D Representations of Solids

2. Some parts of the solid may not be seen.
Orthographic Views of Solids
We cannot have a complete understanding of a solid from its 2-D representation because it could only show the view of the solid observed from one direction.
Some parts of the solid may not be seen.

3. and the top of the solid as below.
In order to know more about the shape of the solid, three 2-D representations are drawn according to the views taken from
the front,
the side
and the top of the solid as below.
top
top view
front
side
front view
side view

4. orthographic views of the solid
top view
front view
side view
top view
orthographic views of the solid
top
front
side
front view
side view
By putting these three views together on a grid paper as shown, orthographic views of the solid is obtained.

5. Suppose the following solid is given, we can draw its orthographic views on grid paper.
front view
side view
top view
front

6. Follow-up question
Draw the orthographic views for the following solid on the grid paper provided. 1.
top view
front view
side view
front

7. Follow-up question
Draw the orthographic views for the following solid on the grid paper provided. 2.
1 cm
top view
front view
side view
1 cm
1 cm
2 cm
1 cm
1 cm
front
1 cm
1 cm

8. Identifying Solids from their Orthographic Views
front view
side view
top view
We can sketch the solid from its orthographic views.
(i) Sketch the front view of the solid first.
(ii) Complete the solid according to its side view and top view.
(iii) Check whether the solid obtained matches the given dimensions.

9. Follow-up question
According to the orthographic views on the right, sketch the corresponding solid in the space provided,
front view
side view
Solution
top view