## An Elementary Treatise on Trilinear Co-ordinates: The Method of Reciprocal Polars, and the Theory of Projections |

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An Elementary Treatise on Trilinear Co-Ordinates, the Method of Reciprocal ... Norman MacLeod Ferrers No preview available - 2015 |

### Common terms and phrases

angular points appears asymptotes becomes called centre Chap chapter chord circle co-ordinates coefficients coincide College condition conic conic section considered constant corresponding Crown 8vo curve described determine directrix distance Edition equal equation EXAMPLES expressed fixed point focus follows four points given point given straight line gives harmonic Hence hyperbola identical Illustrations imaginary line at infinity locus meet method move numerous observed obtain opposite sides pair parabola parallel passing pencil perpendicular points of contact points of intersection polar pole positive Professor projection proposition prove range ratio reciprocal relation represented respect result right angles satisfy second degree seen sides similar Similarly Suppose tangents term theorem theory third three points tion touch TREATISE triangle of reference University values whence writing written