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Published online by Cambridge University Press: 03 November 2016
Now that formal Euclidean geometry is disappearing from the school syllabus the time is ripe for a reappraisal of the background to analytical geometry
Consider the following question. Find the coordinates of the fourth vertex of a parallelogram A BCD if the other vertices are A(2, 4), J5(l, 1) and (7(7, 2).