Exercise 1: draw the following steps
Step 1: draw a line with right angles and attach a side to it. Color or shade the side. Suddenly it looks like something with a certain thickness, for example made of stone or wood.


Step 2: Draw the horizontal lines of the side from step 1 now diagonally up or down. This way the side also gets a top or bottom.

Step 3: if you turn such a drawing a quarter turn like here, the side has become the top. Now it looks like the battlements of a castle. You might like to draw figures that keep watch.

Step 4: Draw a line with waves and sharp points. Attach a side to it as in the following examples. In the last example you start with a double line.



Step 5: Draw the following shapes with a curl.




EXTRA: the following image shows four upright dominoes, each with a distinct front and side. How would you draw them if they fell over? A possible elaboration of this exercise is given at the end of chapter 2.
