Relative Construction Methods

In addition to Guide Lines and Snap Guides, the relative construction methods also constrain the element construction direction to a constant angle or offset. They are accessible from the Drafting Aids toolbar:

https://helpcenter.graphisoft.com/wp-content/uploads/archicad-25/030_interaction/DraftingAids.png 

They can also be accessed from the third button of the Control Box.

https://helpcenter.graphisoft.com/wp-content/uploads/archicad-25/030_interaction/ControlBoxRelative.PNG 

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

See Control Box for more information.

Each Relative Construction Method is described in the following sections:

Parallel and Perpendicular Constraints

Angle Bisector Constraint

Offset and Multiple Offset Constraints (Relative Construction Methods)

Aligning Elements to a Surface in 3D

Snap Points on Temporary Vector