A triangle can be specified by giving three independent geometric relationships defined between its elements. Usually, these relationships are distances between two vertices, angles between two sides, and heights. For each triangle specified by a set of three of such relationships, we present a procedure that constructs the triangle using ruler and compass alone.
Informe de recerca sobre constructibilitat de triangles amb regle-i-compas
Joan-Arinyo, R. "Triangles, ruler and compass". 1995.