Perimeter

1. Triangle

1.1. Sum of all sides

2. Perimeter of square

2.1. 4 ✖ sides

3. Perimeter of Rectangle

3.1. 2(l+b)

4. Perimeter of Parelelogram

4.1. 2(Base+side)

5. Circumference or perimeter of Circle

5.1. 2πr

6. Perimeter of rombus

6.1. 4 ✖ sides