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"This book covers all three forms of layout as well as geometric construction. It introduces the learner to the techniques used in parallel line, radial line, and triangulation. With videos and animations, the learner has an opportunity to play, pause, and rewind as they practice these techniques. This book covers material required for a level 1 sheet metal apprentice (Line E)."--BC Campus website.

The article discusses the math section of the Scholastic Assessment Test (SAT) in the U.S., particularly geometry. It offers some useful strategies and concepts to solve geometric problems which include the illustration of the diagram to depict the answer easily and understanding the way angles are represented or calculated. It also notes the importance of familiarizing the formulas in finding the area of several shapes including triangle, rectangle and circle.

This article presents information about oscilloscopes. The oscilloscope is an important tool in engineering. It displays a graph of an electrical signal on a screen. In its basic operational mode, the oscilloscope graphs instantaneous signal values versus time. Displayed waveforms have three basic components: Y, the vertical or amplitude component; X, the horizontal or time component; and Z, the signal brightness or intensity. Oscilloscopes are used in physics, electronics, instrumentation and measurements, communications, control, mechanical engineering, and many other areas where nonelectrical signals can be converted into electrical signals.

A definition of the term "incident" is presented. It refers to an edge of a graph that is said to be incident with the two nodes it connects and conversely.

A definition of the term "connected graph" is presented. It refers to any two distinct nodes connected by a path.

A definition of the term "arc" is presented. It refers to an edge, link or path that connects two nodes in a graph or network. It usually means that it is directed.