Construction through Angles and Side Lengths
To construct through angles and side lengths, you first need to set the side lengths, then select the degree values for the angles.
After setting the required number of angles, the program will automatically construct the ceiling and fill in the remaining angles. However, you can edit them manually. In this case, the ceiling drawing will change dynamically. Angles can be set by pressing the buttons: "45", "90", "135", "270", or by entering them manually.
In the program settings, you can also change the degrees of the angles on the quick buttons.
The general principle to follow is that the entire ceiling is divided into known triangles: for each of them, either all side lengths must be known, or two sides and the angle between them must be known.
Video:
Construction through angles in version 1.58: YouTube, RuTube