#
Quadrilaterals
Not all things with four sides have to be squares or rectangles! We will now broaden our understanding of quadrilaterals!

## Videos

- Quadrilateral Overview Quadrilateral Overview
- Quadrilateral Properties Quadrilateral Properties
- Proof - Opposite Sides of Parallelogram Congruent Proof - Opposite Sides of Parallelogram Congruent
- Proof - Diagonals of a Parallelogram Bisect Each Other Proof - Diagonals of a Parallelogram Bisect Each Other
- Proof - Opposite Angles of Parallelogram Congruent Proof - Opposite Angles of Parallelogram Congruent
- Proof - Rhombus Diagonals are Perpendicular Bisectors Proof - Rhombus Diagonals are Perpendicular Bisectors
- Proof - Rhombus Area Half Product of Diagonal Length Proof - Rhombus Area Half Product of Diagonal Length
- Area of a Parallelogram Area of a Parallelogram
- Whether a Special Quadrilateral Can Exist Whether a Special Quadrilateral Can Exist
- Rhombus Diagonals Rhombus Diagonals