This is an example of Hinge theorem. Play around with the triangle. Another name for the [i]Hinge Theorem[/i] is [i]SAS inequality.[/i] Why do you think it is also called [i]SAS Inequality[/i]?
Another name for the [i]Converse of the Hinge Theorem[/i] is [i]SSS inequality.[/i] Why do you think it is also called [i]SSS Inequality[/i]?