An orthographic drawing is a drawing that shows the top view, front view, and right-side view of a three-dimensional figure. We can also simply call the right-side view side view.
Here is how to make an orthographic drawing of the three-dimensional figure below.
Before you do the drawing, you need to clearly label or identify the front view, top view, and the right-side view.
Looking at the figure, try to visualize what the top, front, and right view will look like
Here is what you will see when you are looking at the drawing from the front. The front view is perhaps the easiest one to visualize in this case. Therefore, I will start with the view from front first.
I know it can be tricky and confusing. Look at the figure multiple times and try to visualize what you will see if you were looking at it in real life.
Here is what you will see when you are looking at the drawing from the right side. The view from the right is not very complicated to visualize in my opinion. It is possible that some people may find it even easier to visualize than the view from the front.
Notice the use of dashed lines to show a hidden edge. Whenever, you are making an orthographic drawing, always use dashed lines to represent edges that you cannot see. It is important to put these dashed lines since people may misinterpret these drawing if you do not!
Here is what you will see when you are looking at the drawing from top. The view from top is perhaps the most difficult one to visualize in this case in my opinion.
Notice the green and the red lines. These solid lines show visible edges. These are edges that you do not see on the drawing. However, you see them when you look from the top.
Now, try looking for three-dimensional figures in your house and see if you can identify the top view, side view, and front view of these figures.