Question Detail
Question
Which conic section is defined as 'the set of points in a plane whose sum of distances to two fixed points, called foci, is a constant'?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Page 4 defines Ellipse as: 'This is defined a set of points in a plane whose sum of distances to two fixed point, called foci, is a constant.'
Hint
Review the 'CONIC SECTIONAS LOCI OF A MOVING PART' section on page 4.