Class 7 maths Perimeter of a Parallelogram

# Class 7 maths Perimeter of a Parallelogram

• Perimeter of a Parallelogram
• Summary
• What’s Next?

In our previous segment of Class 6 Maths, we learnt about the perimeter of a square and a triangle. In this segment, we will learn about The perimeter of a parallelogram.

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## What is the perimeter of a parallelogram?

A parallelogram is a quadrilateral which has its opposite sides parallel and equal in length. The perimeter of the parallelogram is twice the sum of one pair of its adjacent sides.

Consider a parallelogram whose adjacent sides are of length ‘a’ and ‘b’. Thus, the perimeter of the parallelogram = a + b + a + b

= 2a + 2b

= 2(a + b)

For example,

If the adjacent sides of a parallelogram are 9 cm and 5 cm, then its perimeter is given by, Perimeter of the parallelogram = 2(a + b)

= 2(9 + 5) = 2(14)

= 28 cm.

So, the perimeter of the parallelogram is 28 cm.

Summary

 Perimeter of a Parallelogram Twice the sum of one pair of its adjacent sides 2(a + b)

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