Perimeter                          of a Rectangle
          •The perimeter is the distance around a figure.
          •The formulas are:
                      P = 2L + 2W
                      P = 2 (L + W)                                       15 in.
          •Measured in single
             units.                                      8 in.
                                 P = 2(8 in.) + 2(15 in.)P = 2 (8 in. + 15 in.)
                                 P = 16in. + 30 in.                 P = 2 (23 in.)
                                 P = 46 in.             P = 46 in.
                     Perimeter of a Square
        •The perimeter is the distance around a figure.
        •The formula is:
                  P = 4s
        •Measured in single
           units.
                      P = 4s
                      P = 4(9in.) or 4 x 9 in.                       9 in.
                      P = 36 in.
          Perimeter of a Triangle
    •The perimeter is the distance around a figure.
    •Add up all three sides. P = A + B + C
    •Measured in single
       units.
                           5 inches      5 inches
           P = A + B + C
           P = 5 in. + 5 in. + 5 in.
           P = 15 in.             5 inches
                               Area of a Rectangle
           •The number of square units needed to cover the 
                surface of a figure.
           •The formula is: A = L x W
           •Area is measured in square units.
                                                                    9 in.           A = L x W
                                                                                    A = 14 in. x 9 in.
                                            14 in.                                  A = 126 square in.
                       Area of a Square
        •The number of square units needed to cover the 
           surface of a figure.
        •The formula is: A = s² or A = s x s
        •Area is measured in square units.
                                            A = s²           A = s x s
                                            A = 6 in.²       A = 6 in.  x 6 in.
                        6 in.               A = 36 sq. in.   A = 36 sq. in.