This website gives basic ideas of constructing triangles[http://www.cimt.plymouth.ac.uk/projects/mepres/book7/bk7i5/bk7_5i5.html www.cimt.plymouth.ac.uk] | This website gives basic ideas of constructing triangles[http://www.cimt.plymouth.ac.uk/projects/mepres/book7/bk7i5/bk7_5i5.html www.cimt.plymouth.ac.uk] |