Question

Which statement best describes a focal chord in any conic section?

Options

• A chord perpendicular to the directrix

• Any chord passing through the centre

• A chord whose midpoint is the focus

• Any chord passing through the focus

Answer 1

Any chord passing through the focus

Explanation:

A focal chord is any chord of a conic that passes through the focus. Its endpoints are on the conic, and the line segment includes the focus as an interior point.