Question

question 20 of 25

what object is defined using a directrix and a focus?

a. perpendicular bisector
b. parabola
c. angle bisector
d. circle

Explanation:

Analyze the geometric definition

A parabola is defined as the set of all points in a plane that are equidistant from a fixed point (the focus) and a fixed line (the directrix).

Evaluate the given options

• A. Perpendicular bisector: Defined using two points.
• B. Parabola: Defined using a focus and a directrix.
• C. Angle bisector: Defined using two intersecting lines.
• D. Circle: Defined using a center point and a radius.

Answer:

• (A) Perpendicular bisector
• (B) Parabola (Correct answer)
• (C) Angle bisector
• (D) Circle