Drag the [color=#0000ff]BLUE[/color] points on the figure to change the position of the lines. (Note: You cannot drag the black points). [br]Click on the button in the upper right to "make line CD parallel to AB." [br]Click on the "Reset" button to return to the previous configuration.[br][br][size=50]This material is based upon work supported by the National Science Foundation (#1453493, PI: Michelle Cirillo). [br]For more information about the project visit: [url=http://www.pisc.udel.edu/]www.pisc.udel.edu[/url].[/size]

What pattern do you notice in the angles?