Parallel and Perpendicular Constraints

Use these commands to draw new elements that are either parallel to or perpendicular to a reference line or existing element edge.

The Parallel and Perpendicular constraint commands are accessible from the Drafting Aids toolbar:

//helpcenter.graphisoft.com/wp-content/uploads/ac21_help/02-interaction/ParaPerpToolbar.png 

They are also accessible from the Control Box.

Note: The Control Box is not visible by default. It is available at Window > Palettes.

See Control Box for more information.

1.Make sure that the Grid Snap Function is inactive.

See Deactivate Grid Snap.

2.Choose the Perpendicular or Parallel icon and click it to make it active.

3.Select a line or an element edge as a reference by clicking it (the Mercedes feedback will indicate an edge), or draw a temporary reference line using the cursor. The cursor icon will indicate which method (parallel or perpendicular) is active.

4.Draw the new element, which will be perpendicular or parallel to the reference line.

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