[b]Click and drag the blue points[/b] to investigate the properties of each type of quadrilateral. [b]Which can be turned into other types[/b]? (Example: a rectangle can be a square)[br][br]You can also use the [b]angle measuring tool[/b] at the top to measure more angles.[br][br][b]To move the screen[/b]: Shift + Click and drag[br][b]To zoom[/b]: Shift + Scroll