1. 6.4 Rhombus, Rectangles and Squares

2. Special Parallelograms
Rhombus- all sides are congruent
Rectangle – all interior angles are Right angles
Square – All angles are Right
and all sides congruent

3. Theorem
In a Rhombus the diagonals are perpendicular.

4. Theorem
In a Rhombus, opposite angles are bisected by the diagonal touching both opposite angles.

5. Theorem
In a Rectangle diagonals are congruent.

6. Answers are Always, Sometimes or Never
#1. A Rectangle is a Square.
#2. A square is a Rhombus

7. EFGH is a Rectangle
K is the midpoint of FH. EG = 8z – 16
Find EK

8. Some Questions What is another name for an equilateral quadrilateral?
Which quadrilaterals have the given property
All sides are congruent?
All angles are congruent?
The diagonals are congruent?
Opposite angles are congruent?

9. Some Questions What is another name for an equilateral quadrilateral?
Which quadrilaterals have the given property
All sides are congruent?
All angles are congruent?
The diagonals are congruent?
Opposite angles are congruent?

10. Some Questions What is another name for an equilateral quadrilateral?
Which quadrilaterals have the given property
All sides are congruent?
All angles are congruent?
The diagonals are congruent?
Opposite angles are congruent?

11. Some Questions What is another name for an equilateral quadrilateral?
Which quadrilaterals have the given property
All sides are congruent?
All angles are congruent?
The diagonals are congruent?
Opposite angles are congruent?

12. Some Questions What is another name for an equilateral quadrilateral?
Which quadrilaterals have the given property
All sides are congruent?
All angles are congruent?
The diagonals are congruent?
Opposite angles are congruent?

13. Some Questions What is another name for an equilateral quadrilateral?
Which quadrilaterals have the given property
All sides are congruent?
All angles are congruent?
The diagonals are congruent?
Opposite angles are congruent?

14. Homework
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