Page 1 :
Chapter-11, , Perimeter and Area, , Perimeter :- PeritMetron, Perimeter means around and metron, means measure., Perimeter is the total distance of all the, sides of a closed plane figure., , Or, The length of the boundary of a plane, figure is called its perimeter., Perimeter = Sum of the length of all the, , sides of a closed plane figure, , We use perimeter to find :, Length of the border of a, , saree ,shawl ,or blanket., , Length of rope needed to fence a park, , farm field garden or a piece of land.

Page 2 :
Square -Each side of the figure has the, same length so it is a square., Perimeter of a square, =Side +Side +Side +Side, =4xSide, , Rectangle-The opposite sides have the, same length so it is a rectangle., The longer side is called the length and, the shorter side is called the breadth of, a rectangle., Perimeter of the rectangle, =Length +Breadth +Length+Breadth, =2xLength+2xBreadth, =2x ( length+Breadth)

Page 3 :
Triangle-The figure formed with three, sides is a triangle. A triangle can also, have unequal sides to find its perimeter, be add the lengths of its sides., , Perimeter of triangle =Sum of all sides., , Composite figure-The figure is made up, of two or more plane figures is called a, composite figure, , The perimeter of the composite figure is, , the total length of its side