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Ex 7.1, 3 - Determine if (1, 5), (2, 3) and (-2, -11) - Ex 7.1

  1. Chapter 7 Class 10 Coordinate Geometry
  2. Serial order wise
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Ex 7.1 , 3 Determine if the points (1, 5), (2, 3) and (– 2, – 11) are collinear. Let the 3 points be A, B & C Collinear points are points which fall on the same line There are three cases possible Case 1 A, B & C are collinear if AB + BC = AC Case 2 A, B & C are collinear if BA + AC = BC

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