... u + v the solution for a, b,and c may be a multiple of the specified solution. For example, consider the solutiona =8, b =15,andc =13of eqn (1.2.1). From the inverse transformation we haveu ... Table 1.2 we givethe first few solutions to eqns (1.2.1) and (1.2.2) for triples {a, b, c} for triangles withC =60◦and [a, b, c] for triangles with C = 120◦. See Figs 1.2 a nd 1.3 f or examplesof ... responsibility for the use of the word ‘equable’, which I do notlike. Nor did I like a GCSE coursework task (for UK pupils, aged 15–16) which askedpupils to study ‘equable shapes’. My reason for disliking...