



 This page contains examples of basic constructions in C.a.R.





 Introduce the interface and simple constructions of points, lines and circles.





 Open this applet and try it yourself.





 Use the given tools for drawing points, lines, rays, segments or circles.
Use the 'move tool' (blue arrow) to move points or simply drag points while pressing the right mouse button.
Use the 'left arrow' to delete last drawn objects.





 Simple construction (line reflection and a kite) with circle tool; hide and show objects.





 Open this applet and explore the tools.





 Try the tools that show/hide objects and toggle the display of hidden objects.





 Use only the circle (compass) tool to make a rhombus.





 Another way to make a rhombus; use circle and parallel lines.





 Try the tool for drawing parallel lines.





 Construct angle bisector; the compass and straightedge method.





 Create macro to construct angle bisector; there is no builtin tool for this.





 Construct 2 perpendicular bisectors of a triangle and track their intersection; make a locus.





 Try the tools for constructing midpoints and perpendicular lines.





 Try the tool that marks angles. Right click objects to edit their properties, show their labels and measurements. You can also use the 'edit property' icon, but it is not available in the applet.





 This is the dialog box when you right click a segment and edit its properties.





 Regular Pentagon by compass and straightedge construction





 See this original construction.





 Regular Pentagon by rotating vertices.





 See the original construction.





 Make an angle from B about A. Specify the size.





 Regular Pentagon by transforming coordinates.





 See this original construction.





 Define the coordinates of B in terms of those of A.






