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If AB plus BC equals AC for three points A, B and C, the points are:
AConcyclic
BConcurrent
CCoplanar
DCollinear
Answer & Solution
Correct answer: D. Collinear
1. The two shorter distances add up to the longest.
2. B lies exactly on the segment AC.
3. So the points are collinear.
_Source: NCERT Class 10 Mathematics, Chapter 7, Coordinate Geometry._
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