Pure Mathematics 1 1.3 Coordinate geometry 1.3.4 Lines, circles and tangents Key ConceptsLearn FirstLoading… Key FormulasKnow TheseLoading… Common MistakesAvoid TheseLoading… StrategyApply ThisLoading…9709-P1-SUB-1.3.4-115 QuestionsLoading… 9709-P1-SUB-1.3.4-215 QuestionsLoading…