1. Special parallelograms

2. PropertyParallelogramRhombusRectangleSquare All sides congruent XX Opposite sides congruent XXXX Opposite sides parallel XXXX Opposite angles are congruent XXXX All angles are rt. XX Diagonals bisect each other XXXX Diagonals are congruent XX Diagonals are perpendicular XX Each diagonal bisects opposite angles XX

3. Rhombus 1.Each diagonal bisects the two angles 2.The diagonals are perpendicular 3.The area of a rhombus is: d1d1 d2d2

4. Rectangle 1.The diagonals are congruent 2.C:\Documents and Settings\James.Danforth\My Documents\Math III\chapter 9\9.3 reteaching.pdfC:\Documents and Settings\James.Danforth\My Documents\Math III\chapter 9\9.3 reteaching.pdf