You can create triangular and quadrilateral areas filled with a color. For quicker results, create these areas with the FILLMODE system variable off, then turn FILLMODE on to fill the finished area.

When you create a quadrilateral solid-filled area, the sequence of the third and fourth points determines its shape. Compare the following illustrations: The first two points define one edge of the polygon. The third point is defined diagonally opposite from the second. If the fourth point is set equal to the third point, then a filled triangle is created.

To create a solid-filled area, use the AddSolid method.

Create a solid-filled object

The following code example creates a quadrilateral solid in model space using the coordinates (0, 0, 0), (5, 0, 0), (5, 8, 0), and (0, 8, 0).

```Sub Ch4_CreateSolid()
```
```	Dim solidObj As AcadSolid
```
```	Dim point1(0 To 2) As Double
```
```	Dim point2(0 To 2) As Double
```
```	Dim point3(0 To 2) As Double
```
```	Dim point4(0 To 2) As Double
```

```	' Define the solid
```
```	point1(0) = 0#: point1(1) = 0#: point1(2) = 0#
```
```	point2(0) = 5#: point2(1) = 0#: point2(2) = 0#
```
```	point3(0) = 5#: point3(1) = 8#: point3(2) = 0#
```
```	point4(0) = 0#: point4(1) = 8#: point4(2) = 0#
```
```	' Create the solid object in model space
```
```	Set solidObj = ThisDrawing.ModelSpace.AddSolid _
```
```				 (point1, point2, point3, point4)
```
```	ZoomAll
```
```End Sub
```