# Learn AutoCAD Basics: DAY 3

The following exercise forces us to use the TRIM and the CIRCLE command in AutoCAD.

You might benefit from learning how to use these commands beforehand.

## Exercise

In the previous session, we learned how to use the LINE command. Those techniques will help you a great deal here.

Here is the rough image you should strive to reproduce.

Two circles and two Rectangles.

What is the easiest way to get to this?

1. Create the big rectangle using the LINE command
2. Use the Center on the top side of the triangle to create the two circles.

For step 2, you need to turn the Midpoint ON if you want to be able to find the center of that segment while creating the circle.

Here is how to do it (right-click on 1 and tick 2)

Now, you should be at the following point

Trim the big circle and Erase the top side of the rectangle

Now, all we need to do is create a small Rectangle. Given the dimensions above, if we consider that the left corner of the figure is at the point of coordinates (0,0), we need to start the small rectangle at the point of coordinates (10,15)

What we will do.

1. Move the UCS to the left-down corner of the figure.
2. Start the line at the point (10,15)

### How to move the UCS to the left-down corner of the figure

1. Type UCS
2. Select the point
3. Move the cursor in the x-direction and click
4. Move the cursor in the y-direction and click

This is what you are supposed to get

Notice the UCS

Now, you can quickly start the line at the point (10,15) and create the small rectangle.

## Exercise

### 19 thoughts on “Learn AutoCAD Basics: DAY 3”

1. Hi there, I am stuck in the section where the circle is moved to the designated 10,10 area. Can I please have this explained? I have tried using a method which relates to moving the UCS but have had no luck. Thankyou

2. You must be making a mistake.

To move the UCS
1. Type UCS and Press ENTER
2. Select the point A
3. Click on X
4. Click on Y

Now you are ready to create the circle. How do you create the circle?
1. Type CIRCLE and press ENTER
2. Type 10,10 and Press ENTER
3. Type 5 and Press ENTER

3. Are we presuming here that 3 angles in that diagram are right angles?

4. yes

5. what are the units we should we use ?
inches r millimeters r centimeters