1. Chapter 3 : Communicating Ideas

2. Audio communication – messages that can be heard

3. Audiovisual communication: Ideas and messages that can be both seen and heard.

4. CAD: a method of making drawings using a computer; CAD stands for Computer- Aided Design.

5. Communication: the process of exchanging information and ideas between 2 or more living beings.

6. Communication Technology: the transmitting and receiving of information using technical means, such as special devices for transmitting and receiving information and special mediums for transmission.

7. Construction Line: thin, faint lines used to start a drawing.

8. Drafting: drawings of ideas to be communicated, often called the “language of industry”.

9. Feedback: In manufacturing, it is information provided to a manufacturer by consumers after they try samples of a product; in communication, a receiver’s response to a source’s question or statement.

10. Isometric paper: paper that is used for sketching. It has a grid of vertical lines and other lines at 30 degrees to the horizontal.

11. Isometric sketching: the simplest type of picture-like drawing; it is used to share an idea or record ideas for further discussion.

12. Line Drawing: objects and ideas represented by lines and shapes.

13. Medium: the agent over which information is sent.

14. Object Line: line that is darker and thicker than a construction line; they are used to show the outline of an object.

15. Orthographic Projection: kind of drawing that shows each surface of the object “square on” (at right angles to the surface).

16. Perspective sketching: sketching method that provides the most realistic picture of objects.

17. Receiver: In communication, something or someone who gets a message.

18. Scale Drawing: A drawing that is larger or smaller than the object by a fixed ratio.

19. Source: In communication, the starting point of a message.

20. Storage: Information that is understood and stored for later use.

21. Symbol: simple picture or shape used as a means of communicating without using words.

22. View: in orthographic projection, a drawing of the front, top, or right side of an object as seen looking at right angles to the surface.

23. Virtual Reality: an artificial environment provided by a computer that creates sights, sounds, and, occasionally, feelings through the use of a mask, speakers, and gloves or other sensory-enhancing devices.

24. Visual Communication: ideas in a form that we can see.