



 In this set of examples, we consider different ways to create a rhombus.





 Method 1: using the circle and parallel lines tools





 Step 1: make a segment AB






 After selecting the tool, click two points in the drawing pad, a segment AB will be created. This the first side of your rhombus.





 Step 2: make a circle with center A and radius AB






 Note that size and position of the circle change with A and B.





 Step 3: add a point C on the circle






 Point C should be freely movable on the circle.






 AC will be another side of your rhombus.





 Step 5: construct parallel lines






 To construct a line through C parallel to AB, click point C and segment AB. Similarly, construct another parallel line with point B and segment AC. These two lines will define the fourth vertex of your rhombus.





 Step 6: add intersection, D, of the parallel lines






 When the pointer is over the intersection, both lines should be highlighted. When you click on it, a point D will be added. This is the fourth vertex of the rhombus.





 Step 7: create a polygon ABDC






 Click the four points to make a polygon. Drag A, B or C to check that the polygon remains a rhombus.





 Step 8: hide construction lines






 Choose the mode "Show/hide object", then click on the parallel lines and circle. These objects will remain highlighted. They will be hidden when you leave this mode, say, when return to the mode of moving objects.






 Another way of hiding objects is simply right click individual objects and check the option "show objects" from the contextual menu.





 From the view menu, open the construction protocol. All created objects will be listed in a new window. Study this list and review the steps in making this construction.






 This construction is done with method 1 described above.





 Here are two more methods for constructing a rhombus. Open the construction protocol in each file and find out how the construction is done. Can you think of other methods?






