Question

Parallelogram law || if you don't know the answer, pls don't write unnecessary!
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Answer 1

Answer:

In mathematics, the simplest form of the parallelogram law belongs to elementary geometry. It states that the sum of the squares of the lengths of the four sides of a parallelogram equals the sum of the squares of the lengths of the two diagonals. We use these notations for the sides: AB, BC, CD, DA

Explanation:

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Answer 2

Answer:

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