The figure below has no constraints (givens). [br][br]Drag each of the points around and observe how the figure changes. What kinds of shapes does it appear that you can create? Does it look like you could make a parallelogram? Under what conditions?

The figure below has one constraint (given): Segment DE is congruent Segment BE.[br][br]Drag each of the points around and observe how the figure changes. What kinds of shapes does it appear that you can create? Does it look like you could make a parallelogram? Under what conditions? [br][br]What shapes does it appear you CAN'T create?

The figure below has two constraints (givens): [br][list=1][*]Segment DE is congruent Segment BE[/*][*]Segment AE is congruent to Segment CE[br][br][/*][/list]Drag each of the points around and observe how the figure changes. What kinds of shapes does it appear that you can create? Does it look like you could make a parallelogram? Under what conditions? [br][br]What shapes does it appear you CAN'T create?