Choose the Correct Answer

This 25-question multiple-choice set draws on every result in the chapter without introducing anything new: the family-of-circles idea and tangent/normal-to-a-circle results (§5.2), standard-form parameters and eccentricity of the ellipse and hyperbola (§5.3.3–5.3.4), tangent/normal conditions for the parabola and hyperbola (§5.6.3), and one locus-from-the-focus-directrix-definition question (§5.3). Two recurring exam techniques pay off repeatedly here: reading a circle's centre off the general-form coefficients without needing the constant term (Vieta's-formula shortcuts for "the centre of the circle inscribed in a rectangle formed by two quadratics" collapse to averaging each quadratic's roots), and matching a candidate tangent line's …