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

You might benefit to learn 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.

## Learning AutoCAD Basics

Here is the rough image you should strive to reproduce.

Two circles and two Rectangles.

What is the easiest way to get to this?

- Create the big rectangle using the LINE command
- 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.

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

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

- Type
**UCS** - Select the point
- Move the cursor on the
**x-direction**and click - Move the cursor on the
**y-direction**and click

This is what you are supposed to get

Notice the UCS

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

## Exercise

If you have any confusion about this, Just leave a comment below and I will have no problem explaining it further.

## 19 comments

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

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

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

yes

what are the units we should we use ?

inches r millimeters r centimeters