Autodesk AutoCAD is the most popular commercial CAD program. Its development, introduction, and marketing have received extensive coverage in the popular press. 3D Objects An AutoCAD drawing consists of 2D drawings called “layers,” which are typically placed on top of one another to form a 3D drawing. AutoCAD allows the user to work in a variety of drawing and modeling environments, including perspective, orthogonal, and 3D. The ability to work in perspective is particularly valuable for architects, landscape architects, and engineers who work in these fields. In addition to 2D objects, AutoCAD allows the user to define 3D objects, including 3D curves, 3D surfaces, 3D solids, 3D shapes, and 3D meshes. Figure 1-2. An AutoCAD drawing can contain both 2D and 3D objects. Coordinate Geometry The two most important features of AutoCAD are the ability to define a coordinate system and to display and edit coordinate geometry (ie, the coordinates of points, lines, and arcs) on a display screen. A coordinate system is a conceptual representation of a set of reference points in space. The reference points of a coordinate system are called coordinates, which are written in terms of the x-axis, the y-axis, and the z-axis. Coordinate geometry is based on the two x- and y-axes. It is represented by a combination of a point and a line, in which a point is a point on a line. A line is a sequence of points that are connected end to end, and the points in the line are connected together. Figure 1-3. The x-, y-, and z-axes of a coordinate system are represented by the small dot, the small square, and the small triangle, respectively. Editing and Working with Objects Objects, which are composed of points, lines, arcs, surfaces, and solids, are used to create the objects displayed in a drawing. Objects can be modified in many ways, including moving, reshaping, recoloring, converting, selecting, and deleting. The basic ways to move objects are to move points, lines, arcs, surfaces, and solids. These are described in more detail below. Figure 1-4. Objects are composed of points, lines

## What’s New In?

Rapidly send and incorporate feedback into your designs. Import feedback from printed paper or PDFs and add changes to your drawings automatically, without additional drawing steps. (video: 1:15 min.) Markup Assist: Automatic detection of ribbons and fonts. Use a predefined markup for a ribbon or insert arbitrary text to avoid repeating identical content. (video: 1:15 min.) Automatic detection of ribbons and fonts. Use a predefined markup for a ribbon or insert arbitrary text to avoid repeating identical content. (video: 1:15 min.) Material Descriptions: Generate material lists automatically from part properties and guide objects. (video: 1:14 min.) Generate material lists automatically from part properties and guide objects. (video: 1:14 min.) Sample Template: A new sample template makes it easy to practice and speed up your first drawings. (video: 1:29 min.) A new sample template makes it easy to practice and speed up your first drawings. (video: 1:29 min.) Smart Guides: Select parts automatically based on their geometric properties, or choose their location and orientation on the drawing canvas. (video: 1:38 min.) Select parts automatically based on their geometric properties, or choose their location and orientation on the drawing canvas. (video: 1:38 min.) User Profiles: Create and manage profiles for all of your own data, which you can then share with other users of the application. (video: 1:31 min.) Create and manage profiles for all of your own data, which you can then share with other users of the application. (video: 1:31 min.) Optimized Commands: Quickly open, close, navigate, and print reports from external applications, such as Excel. (video: 1:14 min.) Quickly open, close, navigate, and print reports from external applications, such as Excel. (video: 1:14 min.) New and Improved: Automatic reference point insertion. Insert a reference point automatically when you create a dimension or annotation, and you don’t have to manually choose the insertion point. (video: 1:14 min.) Automatic reference point insertion. Insert a reference point automatically when you create a dimension or annotation, and you don’t have to manually choose the insertion point. (video: 1:14 min

https://ed.ted.com/on/vMH6yDxH
https://ed.ted.com/on/XK3Sw6c6
https://ed.ted.com/on/vWdTGFrV
https://ed.ted.com/on/w225dkOZ
https://ed.ted.com/on/OH1gEmfw

## System Requirements:

Windows: Vista, 7, 8, 8.1, 10 (32-bit and 64-bit) Mac OS X: 10.8, 10.9, 10.10, 10.11 (32-bit and 64-bit) Linux: Ubuntu 12.04, 13.04, 13.10, 14.04, 14.10 (32-bit and 64-bit) Android: 4.4 or above. Gamepad and other input devices: Gamepad is recommended Other