Answer: major axis.
- A major axis
- B minor axis
- C latus rectum
- D directrix
Correct answer: A. major axis
Explanation: The major axis is the longest chord, passing through both foci.
All four conics form a single family distinguished only by eccentricity: a circle is the most "closed" (e=0), an ellipse is an elongated closed curve, a parabola is the borderline open curve (e=1), and a hyperbola has two separate open branches (e>1).
Concept context
Study circles, parabolas, ellipses, and hyperbolas as curves formed by intersecting a plane with a double cone, with their standard equations and key properties.