The perimeter of any figure is the total length of all sides of the figure... 'outer boundaries'... in a circle this is called the circumference.
e.g.
Square : side x 4
Rectangle: (Length X 2) + (Width X 2)
Parallelogram: 2b + 2c ... where b & c are the lengths of one of the opposite sides.
Trapezoid: a + b + c + d ... sum of all four sides
Triangle: a + b + c ... sum of all three sides
Circle: 2 x pi x r
*** So you would 'measure the outline'. This comes in handy with irregularly-shaped perimeters.
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If the figure is 2-dimensional, it is called the perimeter.
Add all sides together to get the perimeter.
the perimeter of a figure is never squared, but the area of a figure is always squared. Hope this helped :)
Perimeter and area are not sufficient to determine the shape of a figure.
The perimeter is the distance around a figureIt is normally its perimeter