Beginning AutoCAD 2010: Exercise Workbook

After completing this lesson, you will be able to:
Understand the Origin
Draw objects accurately using Coordinate Input
Input Absolute and Relative coordinates
Input using Direct Distance Entry
List information about an object
Measure the distance between two points
Identify a location within the drawing
Create your own 8-1/2 11 Master Border
Print from Model Space
In the previous lessons you have been using the cursor to place objects.
In this lesson you will learn how to place objects in specific locations by entering coordinates. This process is called Coordinate Input.
This is not difficult, so do not start to worry.
Autocad uses the Cartesian Coordinate System.
The Cartesian Coordinate System has 3 axes, X, Y and Z.
The X is the Horizontal axis. ( Right and Left)
The Y is the Vertical axis. ( Up and Down)
The Z is Perpendicular to the X and Y plane.
( The Z axis, which is not discussed in this workbook, is used for 3D.)

Look at the User Coordinate System (UCS) icon in the lower left corner of your screen. The X and Y arrows are pointing in the positive direction.
The location where the X, Y and Z axes intersect is called the ORIGIN.
The Origin always has a coordinate value of X=0, Y=0 and Z=0 (0,0,0)
When you move the cursor away from the Origin, in the direction of the arrows, the X and Y...