# 9.4 Isometric, Orthographic, and Foundation Drawings LESSON

```Isometric, Orthographic, and
Foundation Drawings
Lesson 9.4
R.4.G.7 Use orthographic drawings
(top, front, side) and isometric
drawings (corner) to represent threedimensional objects
Vocabulary
Isometric Drawing
• Shows a corner view of a figure
• Is not drawn in perspective, so distances
are not distorted
Foundation Drawing
• Shows the base shape of a structure
• Shows the height of each part
Orthographic Drawing
• Shows an object
from three different
views:
– Top
– Front
– Right Side
Top
Front
Right
Use the isometric drawing to
create the foundation drawing.
Use the foundation drawing to
create the isometric drawing.
Use the isometric drawing to
create the orthographic drawing.
Top
Front
Right
Use the given orthographic drawing
to create an isometric drawing.
Top
Front
Right
Use the given foundation drawing
to create an orthographic drawing
1
3
2
3
2
Top
Front
Right
More Examples
In the isometric drawing below, each cube
equals 1 cubic ft. Find the volume of the
figure.
Even More Examples!
Below is an orthographic drawing of a
monument.
a)How tall is
the monument?
b)How long in
sections is the monument from front to
back?
```