Posted by fa201 on May 18, 2019; 6:19am
URL: https://forum.librecad.org/construct-geometry-objects-tp5717384p5717387.html

Another alterative using 1 base line with a known length and 2 angles :
- draw the base line
- use the tools/line/angle feature : in the tool option bar select the appropriate angle (say 30°) and choose a length (say 100)

- use the tools/line/angle feature : in the tool option bar select the appropriate angle (say 160°) and choose a length (say 100)

- Use trim or lengthen function to cut or extend the lines if necessary.

More details on drawing features at : https://librecad.readthedocs.io/en/latest/ref/tools.html. Note : this document is being "reworked".