The points A A\,A and B B\,B have position vectors (21−3)\begin{pmatrix} 2 \\ 1 \\ -3 \end{pmatrix}21−3 and (5−10)\begin{pmatrix} 5 \\ -1 \\ 0 \end{pmatrix}5−10 respectively.
Find the exact length of ABABAB.
Find the position vector of the midpoint of ABABAB.
The points P P\,P and Q Q\,Q have position vectors (421)\begin{pmatrix} 4 \\ 2 \\ 1 \end{pmatrix}421 and (14−2)\begin{pmatrix} 1 \\ 4 \\ -2 \end{pmatrix}14−2 respectively. Show that ABPQ ABPQ\,ABPQ is a parallelogram.
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.