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.
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.
Here is what you will see when you are looking at the drawing from the right side.
Notice the use of dashed lines to show a hidden edge.
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.
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.