Question

${\huge{\underline{\small{\mathbb{\pink{DERIVATION \ OF \ PARALLELOGRAM \ LAW}}}}}}$​

Answer 1

THE VERIFICATION IS VERY BIG, IT IS EXCEEDING 5000 CHARACTERS.

Answer 2

Explanation:

$\huge \mathtt \red{answer}$

The Parallelogram law states that the sum of the squares of the length of the four sides of a parallelogram is equal to the sum of the squares of the length of the two diagonals. In Euclidean geometry, it is necessary that the parallelogram should have equal opposite sides.