1. 8-4: Rectangles

2. Definition-a quadrilateral with four right angles. Properties
Has all properties of a parallelogram.
All angles are congruent (90 degrees).
Diagonals are congruent and bisect each other.

3. If AC=6x+14 and BD=9x+5, find the length of each diagonal.

4. If ABCD is a rectangle, find x and y.

5. To show a quadrilateral is a rectangle:
Show all angles are right angles.
Show that diagonals are congruent.

6. Is FGHJ a rectangle if F(-4,-1), G(-2,-5), H(4,-2), and J(2,2)?
Show all angles are right angles.
Show diagonals are congruent.

7. Assignment:
WB 8-4