Triangles can be constructed with the length of the 3 sides indicated by the following 15 triples: (1cm,5cm,5cm), (2cm,4cm,5cm), (2cm,5cm,5cm), (2cm,5cm,6cm), (3cm,3cm,5cm), (3cm,4cm,5cm), (3cm,5cm,5cm), (3cm,5cm,6cm), (3cm,5cm,7cm), (4cm,4cm,5cm), (4cm,5cm,5cm), (4cm,5cm,6cm), (4cm,5cm,7cm), (5cm,5cm,5cm), (5cm,5cm,6cm). Edwin