# Parallelogram (Scaffolded Discovery)

The applet below contains a quadrilateral that ALWAYS remains a parallelogram. The purpose of this applet is to help you understand many of the geometric properties a parallelogram has. These properties hold true for any parallelogram (including rectangle, rhombus, square). The questions you'll need to investigate/answer are displayed below this applet.

Use the tools GeoGebra within this applet to investigate the answers to the following questions:

Are opposite sides of a parallelogram congruent?

Are opposite angles of a parallelogram congruent?

Do the diagonals of a parallelogram bisect each other?

Does a diagonal of a parallelogram bisect a pair of opposite angles?

Are the diagonals of a parallelogram perpendicular?

Are the diagonals of a parallelogram congruent?

What is the sum of any pair of consecutive angles of a parallelogram?