If each side is 1cm long then its perimeter is 8 times 1cm = 8 centimeters
You say these things to yourself: -- "The perimeter is the distance all the way around the octagon." -- "The octagon has eight sides." -- "So, if it's a 'regular' octagon, then all the sides are the same length, and each side must be 1/8 of the perimeter." -- If it's not a 'regular' octagon, then it has some longer sides and some shorter ones, and the perimeter doesn't help me find the lengths of the sides.
The perimeter of a octagon is the sum of all its sides.
perimeter = sum of sides. Octagon has eight sides. The sides in this example are each 16 inches. Eight times sixteen is one hundred and forty four. JHC!
It is the sum of the lengths of the octagon's eight sides.
An octagon is an eight-sided figure. If a regular octagon has a perimeter of 24 inches, then each side will be 24 / 8 = 3 inches.
The perimeter is 56.
By using the definition of "perimeter": you need to add the lengths of all eight sides. If it is a REGULAR octagon, you multiply the length of any side by 8, since all sides have the same length.
A polygon with eight sides, regular or not, is an octagon. There isn't a special name for a regular octagon (other than "regular octagon").
The perimeter of an octagon is the distance around its outside, so it is the sum of the lengths of each of its eight sides.
pentagon
Providing that it is a regular octagon with 8 equals sides then its perimeter is 8 time 8 = 64 cm
a regular octagon has eight sides