alleryAn ellipse is the set of points where the sum of two distances is:
AChanging
BCyclical
CConstant
DClimbing
Answer & Solution
Correct answer: C. Constant
1. The distances are measured to two fixed points.
2. Those points are called the foci.
3. The sum stays constant.
_Source: syllabus Mathematics, Ch 10 'Conic Sections'_
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