You find perimeter by adding all the sides of a figure.
You can do this by simply adding all of the lengths of the sides.
The perimeter of anything is found by adding all of the sides. So in the case of a pentagon it is the sum of the length of its five sides.
The distance around a figure
By adding all three sides (length, breadth and height) all-together we get the linear dimensions of a box.
Any figure with 6 sides is a Hexagon. If all sides of the figure are of the same length, and all interior angles are 120° then you have a regular hexagon.
Add all sides together to get the perimeter.
All regular shapes have congruent sides.
Add all measurements of the sides on the figure
you add up all the sides of the figure
Usually that means figure out the area and perimeter. Remember the perimeter is adding all sides like putting up and fence. And the area is x (multiplying) the 2 sides
I do not know but: A closed figure is a figure with sides all around. (if the sides were fences and you were on the inside you could not get out witout climbing a fence)