[b][size=150]Blue lines are parallel and Orange lines are parallel.[/size][/b]
1. Move Slider AD and BC. What conclusion can you make about the sides for the quadrilateral to be a parallelogram?
2. Move Slider AngleA. What [b][u]2 conclusions[/u][/b] can you make about the angles if your quadrilateral is a parallelogram?
3. What conclusion can you make about the diagonals AC and BD if your quadrilateral is a parallelogram?
4. Write a bi-conditional statement about the sides of a parallelogram.
5. Write [b]two[/b] bi-conditional statement about the angles of a parallelogram.
6. Write a bi-conditional statement about the diagonals of a parallelogram.