Angle Dimensions display angle values between a pair of lines or linear edges. An angle dimension can be either acute
or obtuse;
you choose this geometry method from Angle Dimension Settings or the Info Box.
See Angle Dimension Tool Settings.
Note: Angle dimensions are not available in the 3D Document Window.
To dimension an angle, first define the pair of lines or edges by choosing exactly four reference points. These four points will determine two infinite lines that ArchiCAD will use to calculate the angle dimension.
Choose reference points in one of the following ways:
•Click any existing line or edge (Wall, Slab, Roof, Mesh, Fill). This will immediately place two reference points on the clicked line/edge.
•Click the hotspots of existing elements.
•Click anywhere on the plan or on a Guide Line (in this case, the angular dimensions will not be associative).
Now you have defined two infinite reference lines, which divide the space into four quadrants.
With the reference points defined, the Hammer cursor appears. Click to place the angle dimension. The arc of the angle dimension will pass through the point you click.
The Angle Dimension Info Box offers two construction methods:
•With the Inner Dimension (acute) construction method, only the quadrant of the space in which you click with the Hammer cursor will be dimensioned.
•With the Outer Dimension (obtuse) construction method, ArchiCAD will calculate the angle of the clicked quadrant, plus the two adjacent quadrants.
Placing Angle Dimensions on Curves
Select the Angle Dimensioning tool in the Toolbox, then click the bent polygon edge or circular arc you wish to dimension. The two endpoints of the arc will be automatically marked.
Finally, place the dimension line with the Hammer cursor.
Note: It is always the arc side of the angle that will be dimensioned, regardless of the geometry method you choose, or which side you click to.