Properties of a Parallelogram

Use this applet to discover properties of every parallelogram.
[color=#b20ea8]What is true about the opposite sides of a parallelogram?[br]What is true about the opposite angles of a parallelogram?[br]What is true about the consecutive angles of a parallelogram?[br]What relationship do the diagonals of a parallelogram have?[/color]

Information: Properties of a Parallelogram