Let the variables in the figure below represent the measures of the angles in degrees. Find the value of each variable shown. Click the check boxes [b](one on at a time only )[/b] to reveal some of the equations (hints) that could be used to find the angle measures.

.[br][b][i]r[/i][/b] = ________ [b][i]s[/i][/b] = ________ [b][i]t[/i][/b] = ________ [b][i]x[/i][/b] = ________ [b][i]y[/i][/b] = ________ [b][i]z[/i][/b] = ________