• K19
  • Ambitious
Add all of the measurement of the sides of the polygon. For example in square, since this has 4 equal measurement of the sides we just add everything. Let's say it has a measurement of 7, so 7 +7 +7 +7 = 28. So the perimeter of the square is 28
You need to know the measurement of all sides of the polygon first. Then, simply add them. For example, you have a regular pentagon whose sides measures 36 cm. Therefore, the perimeter of the regular pentagon is 180 cm. Always remember that the lengths of the sides of a regular polygon are congruent. ☺ I hope it help.