GCSE Maths (Edexcel)

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Parallelogram Law

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Geometry and Measures Vectors

Parallelogram Law

2:40 Manipulating Vectors
Spec G25
Previous Parallel Vectors Next Collinear Points
  • Parallelogram law is used to find the resultant vector when adding two vectors with a common meeting point
  • Vectors are arranged head to tail to form a parallelogram
  • Opposite sides of the parallelogram are parallel to each other
  • Resultant vector starts at the common meeting point and ends at the opposite vertex of the parallelogram
  • Adding a new vector C to the parallelogram gives the resultant vector of A and B
  • A + B = C
  • Order of traveling along A and B doesn't matter, the overall journey is the same as traveling along C
  • Parallelogram method should be used when adding vectors with a common meeting point

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