To prove that ADFE ~ AGH by the SSS similarity theorem using the information provided in the diagram, it would be enough additional information to know that • HF is 2 units and GH is 3 units. • HF is 3 units and GH is 2 units. • HF is 4 units and GH is 2 units. • HF is 3 units and GH is 4 units.