The points A A\,A and B B\,B have position vectors (3−21)\begin{pmatrix} 3 \\ -2 \\ 1 \end{pmatrix}3−21 and (12−1)\begin{pmatrix} 1 \\ 2 \\ -1 \end{pmatrix}12−1 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 (213)\begin{pmatrix} 2 \\ 1 \\ 3 \end{pmatrix}213 and (4−35)\begin{pmatrix} 4 \\ -3 \\ 5 \end{pmatrix}4−35 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.