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Adding vectors by completing a parallelogram is the:

AParallelogram law
BCommutative rule
CAssociative rule
DDistributive law
Answer & Solution
Correct answer: A. Parallelogram law
1. Two vectors from a common point span a parallelogram. 2. Their sum is its diagonal. 3. That is the parallelogram law of vector addition. 4. So the answer is the parallelogram law. _Source: syllabus Mathematics, Ch 10 'Vector Algebra'_
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