Remember, the fixed point in a parabola's definition is called the 'focus' and is key in its formation. The focus is a crucial element in defining the parabola.
Pro Tip 2/3
Fixed Line Called
The fixed line in the parabola definition is known as the 'directrix', opposite the open side. The parabola gets wider the further the focus is from the directrix.
Pro Tip 3/3
Reflective Property
A parabola has a reflective property where rays parallel to the axis of symmetry reflect through the focus. In headlights, a parabola's shape helps focus light beams.