Use for: Tracing room perimeters, and regular square or rectangle linear (non-area) shapes. You can move the vertices of your markup once drawn, to create a different quadrilateral shape.
In the Quantification workbook, select the Item you want to associate with your Rectangle Polyline.
On the 2D Takeoff toolbar, click Rectangle Polyline .
On the 2D sheet, move your cursor to the position you want to start.
Note: Notice the cursor changes to a green snap vertex when it intersects geometry.
Click and hold, then drag to create a rectangle or square. Alternatively, click to position a vertex, move your mouse, then click again. The properties of your Rectangle Polyline appear in the Takeoff Pane.