Formula of line divisor, Formula of gradient of a straight line, Gradient of parallel lines, Two straight lines are perpendicular if and only if, Area of triangle (given the three coordinates), Area of quadrilateral, Area of polygon, Equation of locus which is equidistant from a fixed point, Equation of locus which the distance from two fixed points is always constant in the ratio m:n, Equation of locus which is always the same distance from two fixed points, Sine rule, Cosine rule, Area of triangle (given the length of two sides and one included angle), Semiperimeter, Heron's formula,

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