Question

formula of area and perimeter of parallelogram​

Answer 1

Answer:

Square 4 × side

Rectangle 2 × (length + width)

Parallelogram 2 × (side1 + side2)

Triangle side1 + side2 + side3

Regular n-polygon n × side

Trapezoid height × (base1 + base2) / 2

Trapezoid base1 + base2 + height × [csc(theta1) + csc(theta2)]

Circle 2 × pi × radius

Ellipse 4 × radius1 × E(k,pi/2)

E(k,pi/2) is the Complete Elliptic Integral of the Second Kind

k = (1/radius1) × sqrt(radius12 - radius22)

Answer 2

PARALLELORAM

AREA : A =BH

PERIMETER : SUM OF THE LENGTHS OF ITS FOUR SIDES