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Engineering Graphics with AutoCAD® 2017 by James D. Bethune

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Chapter 5. Orthographic Views

5-1 Introduction

This chapter introduces orthographic views. Orthographic views are two-dimensional views of three-dimensional objects. Orthographic views are created by projecting a view of an object onto a plane which is usually positioned so that it is parallel to one of the planes of the object. See Figure 5-1.

Image

Figure 5-1

Orthographic projection planes may be positioned at any angle relative to an object, but in general, the six views parallel to the six sides of a rectangular object are used. See Figure 5-2. Technical drawings usually include only the front, top, and right-side orthographic views because together ...

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