The document discusses how to draw lines in Sketchup to create 3D shapes. It explains that lines should be coplanar to create surfaces and never cross. It provides steps for drawing a straight line using the line tool and measurements box, then drawing a second perpendicular line using inferences to align to existing lines. The goal is to create a closed shape with three line segments to generate a surface inside the closed area.

1. Creating lines in Sketchup

2. Lines are a fundamental tool in Google Sketchup software. Lines can be drawn freehand or imported from other sources. In this exercise, we will look at drawing lines using the line tool. Lines are the building blocks in Sketchup that allow us to create surfaces and ultimately 3D shapes.

3. There are some basic tips we need to keep in mind when drawing lines in Sketchup:

5. Creating a straight line

11. Creating a second line, perpendicular to the first line

14. Using Inferences

15. An inference reads or picks up a point from another object during the creation process to align objects or features with each other.

18. You have just created an open line made up of three line segments. The three line segments do not make a shape because they are open leaving a gap. Remember, an inference reads or picks up a point from another object during the creation process to align objects or features with each other. Inferences can help you keep lines the same length.

19. Closing the Line

20. Let’s finish the line segments by closing the open end to create a closed shape. I’m not going to tell you how to do it, but I have a question for you… If you create a closed shape, what happens to the area inside the shape?

21. A. Nothing B. A surface is created Creative Commons cite: Image by Margaret Meijers URL: http:// ictmindtools.net/sketchup/drawing.htm http://creativecommons.org/licenses/by-nc-sa/2.5/

22. If you answered B, then you are well on the way to creating in Sketchup using lines!