Rectangles

1
Rectangles

• Section 8-4

2

• rectangle a quadrilateral with 4 right angles
• Since a rectangle is a special type of
  parallelogram, it has all the properties of a
  parallelogram.

3
Theorems 8-13 and 8-14

• If a parallelogram is a rectangle, then its
  diagonals are congruent.
• If the diagonals of a parallelogram are
  congruent, then the parallelogram is a rectangle.

4
Properties of a Rectangle

• Opposite sides are congruent and parallel.
• Opposite angles are congruent.
• Consecutive angles are supplementary.
• Diagonals are congruent and bisect each other.
• All 4 angles are right angles.

5
Joke Time

• How do you prove a cat has 9 tails?
• No cat has 8 tails.
• A cat has 1 tail more than no cat.
• Therefore, a cat has 9 tails.

6

• What do you call a tall coffee pot while its
  making coffee?
• A hypotenuse (high pot in use)