To measure an object is to assign a
number to its size.
The number representing is linear dimension,
as measured from end to end, is called its measure or
To measure length, use the following
units of measurement:
foot (ft; 12 in.)
centimeter (cm; 1/100 m)
yard (yd; 36 in.) kilometer
(km; 1,000 m)
The perimeter of a polygon is the
sum of the lengths of the sides of that polygon.
The circumference of a circle is the distance
around the formula.