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Which segment of a parabola passes through the focus and runs parallel to the directrix?
AThe axis of symmetry
BThe latus rectum
CThe transverse axis
DThe tangent line
Answer & Solution
Correct answer: B. The latus rectum
1. The segment runs through the focus with both ends on the curve.
2. Because it is parallel to the directrix, it is named the latus rectum.
3. The axis of symmetry also passes through the focus but is perpendicular to the directrix.
_Source: OpenStax College Algebra (CC BY 4.0), Ch 8 "Analytic Geometry", section 8.3 The Parabola_
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