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12.3 Solving Geometric Problems

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Question 19

Relative to a fixed origin OOO, the point A A\,A has position vector (2i−2j−4k)(2\mathbf{i} - 2\mathbf{j} - 4\mathbf{k})(2i−2j−4k), the point B B\,B has position vector (4i+j−7k)(4\mathbf{i} + \mathbf{j} - 7\mathbf{k})(4i+j−7k), and the point C C\,C has position vector (8i+12j−12k)(8\mathbf{i} + 12\mathbf{j} - 12\mathbf{k})(8i+12j−12k).

a.

Find AB⃗\vec{AB}AB

[2]
b.

Show that the quadrilateral OABC OABC\,OABC is a trapezium, giving reasons for your answer.

[2]
Markscheme

12.3 Solving Geometric Problems Questions

  1. A Level
  2. /Maths
  3. /12.3 Solving Geometric Problems

67 exam-style questions on Edexcel A Level Maths 12.3 Solving Geometric Problems. Each one has a worked solution and a mark scheme showing where the marks go.

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