The parallelogram has the following properties:
- Opposite sides are parallel by definition.
- Opposite sides are congruent.
- Opposite angles are congruent.
- Consecutive angles are supplementary.
- The diagonals bisect each other.
https://www.youtube.com/watch?v=-Weia4Pe-9k
https://www.youtube.com/watch?v=_32tPsdQcDo
http://www.mathwarehouse.com/geometry/quadrilaterals/parallelograms/
HW: Attached to notes 6.2 do WS 6.2 (both sides)