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## When using the SUBTRACT command which object do you select?

When subtracting regions, objects in the second selection set are subtracted from objects in the first selection set, and a single new region is created. You cannot use SUBTRACT with **mesh objects**. However, if you select a mesh object, you will be prompted to convert it to a 3D solid or surface.

## How do you SUBTRACT 3D?

**To subtract regions or 3D solids from each other:**

- Click Solids > Solid Editing > Subtract (or type Subtract).
- Select the regions or 3D solids to subtract from.
- Select the regions or 3D solids to subtract and press Enter.
- From the objects in the first selection all objects in second selection are subtracted.

## What is the default UCS in 3D AutoCAD?

AutoCAD provides a movable coordinate system called the user coordinate system(UCS). The XY plane of the UCS is called the **workplane**. In a drawing, by default WCS and UCS have the same orientation. When you create and modify objects in a 3D environment, you can move and reorient the UCS in 3D modeling view.

## How do you subtract solid?

To subtract solids: Select both the object to subtract and the object to subtract from (the base object). **Select Model > Subtract Solids**.

## How do you SUBTRACT a surface in Solidworks?

**To subtract bodies:**

- Click Combine. (Features toolbar) or Insert > Features > Combine.
- In the PropertyManager, under Operation Type, select Subtract.
- For Main Body, select the body to keep. …
- For Bodies to Subtract, select the bodies whose material you want to remove.
- Click Show Preview to preview the feature.
- Click .

## How do you subtract using Excel?

**Subtract numbers using cell references**

- Type a number in cells C1 and D1. For example, a 5 and a 3.
- In cell E1, type an equal sign (=) to start the formula.
- After the equal sign, type C1-D1.
- Press RETURN . If you used the example numbers, the result is 2. Notes:

## How do you join 3D objects in Autocad?

**To Join Objects**

- Click Home tab Modify panel Join. Find.
- Select a source object or select multiple objects to join together.
- Valid objects include lines, arcs, elliptical arcs, polylines, 3D polylines, and splines.