Take a look at this instructional video and learn how to use the rectangle tool in Google SketchUp. Drawing rectangles takes two clicks of the mouse. Click once to start, pull away, and click again to finish. Remember not to draw rectangles that cross over edges, but you can draw rectangles over the top of other edges. This tutorial covers how to draw rectangles on any surface, how to draw a perfect square or golden rectangle. and tips on being accurate.