A parabola is a curve that results from graphing a quadratic function. A parabola is symmetric about a line called the axis of symmetry. The vertex of the parabola occurs where the parabola and the line of symmetry intersect.

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A parabola is the locus of points in a plane, equidistant from a fixed point in the plane (the focus) and a fixed line in the plane (the directrix).

A parabola occurs when a plane intersects a cone parallel to the axis that generates the cone.

A parabola is a curve resulting from graphing a quadratic relation (Ax² + Bxy + Cy² + Dx + Ey + F = 0) that has a discriminant (Δ = B² - 4AC) of zero.

The path an object makes when thrown through the air traces the shape of a parabola.

The cross-sectional shape of the mirrored section of most spotlights is parabolic. The light is placed at the focus, to maximize the light output in one direction.