Use the applet below to answer the questions that appear beneath it.
Use the [b]Angle[/b] tool to measure each [color=#bf9000][b]yellow angle[/b][/color]. What do you notice?
Click the other checkbox to show the [color=#6aa84f][b]other pair of vertical angles[/b][/color]. [br]Use the angle tool to measure these [color=#6aa84f][b]two green vertical angles [/b][/color]now. [br]What do you notice?
Now that you have all four angle measures displayed, drag the slider around. What can you conclude about each pair of vertical angles?