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Three points lying on one straight line are said to be:
ACoplanar
BConcurrent
CCongruent
DCollinear
Answer & Solution
Correct answer: D. Collinear
1. The three points do not form a triangle.
2. They all fall along a single line.
3. Such points are called collinear.
_Source: NCERT Class 11 Mathematics, Chapter 10, Straight Lines._
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