[b]Step 1. Experiment[/b][br]Use the MOVE tool [icon]/images/ggb/toolbar/mode_move.png[/icon]to move Point C, Point D, and Point E.[br]Observe what happens to Angle CAD and Angle DAE as you do this.[br][br][b]Step 2. Draw Conclusions[/b][br]What is the relationship between the large Angle CAE and the two smaller angles?[br][br][b]Step 3. Practice[/b][br]Use the MOVE tool [icon]/images/ggb/toolbar/mode_move.png[/icon]to turn off any one of the three angle size displays.[br]Move Point C, Point D, and Point D to new locations.[br][br]Using what you wrote in Step 2, figure out the missing value.[br][br]Turn on the angle size display to check your answer.[br][br]Try this several times, changing the missing angle size display that is turned off.