3. Perimeter of a Rectangle Perimeter of Rectangle ABCD =
AB+BC+CD+DA = 6+4+6+4 = 2 (6+4) = 2 10 = 20m A 6m B 4m 4m D 6m
C
4. Perimeter of a Square Perimeter of Square EFGH = EF+FG+GH+HE
= 7+7+7+7 = 47 = 28m E 7m F 7m 7m H G 7m
5. Perimeter of a Triangle with equal sides (Equilateral
Triangle) Perimeter of Triangle = MN+NO+OM = 6+6+6 = 36 = 18m M 6m
6m O 6m N
6. Summary Perimeter of a Rectangle = 2 (Length + Breadth)
Perimeter of a Square = 4 Side Perimeter of a Triangle with equal
sides (Equilateral Triangle) = 3 Side
7. Practice Questions 1. Find the perimeter of a rectangle with
length = 10cm and breadth = 9cm. 2. Find the perimeter of a square
with each side = 11cm. 3. Find the perimeter of a triangle with
each side = 8cm.
