Tutorial
In this section, you will create a simple primitive to represent the second part of the building. The shape is a trapezoid with no visible windows.
Create and modify a box:
In the Top viewport, use the Pan tool to bring the brick building area of the drawing (labeled "4 story red brick") into
view. Zoom back a little so the entire new building is visible.

In the Create panel > Geometry > Object Type rollout, click Box.
In the Top viewport, create a box as shown, with a height of 30.0m.

In the Create panel > Name And Color rollout, type Brick Building.
In the Top viewport, use Rectangular Region Selection to select the vertices on the right side. Move them down in the Y axis until they line up with the sketch.
Move them up in the Y axis, until they line up with the sketch.
In the Modify panel > Selection rollout, click Vertex to return to the object level.
