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CBSE Class 10 Mathematics Question 5 of 32

Coordinate Geometry — Question Ex 7.1 Q3

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Ex 7.1 Q3
Question

Determine if the points (1, 5), (2, 3) and (-2, -11) are collinear.

Answer

Coordinate Geometry Class 10 Maths NCERT Solutions Ex 7.1 Q3

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CBSE Class 10 Coordinate Geometry — Complete Guide

Coordinate Geometry is a formula-based scoring chapter worth 6 marks. All questions are direct formula applications.

Quick Revision: Key Formulae

  • Distance: d = √[(x2−x1)² + (y2−y1)²]
  • Section: P = [(mx2+nx1)/(m+n), (my2+ny1)/(m+n)]
  • Midpoint: M = [(x1+x2)/2, (y1+y2)/2]
  • Area: ½|x1(y2−y3) + x2(y3−y1) + x3(y1−y2)|
  • Collinear: Area = 0

Most Important Questions

  1. Find distance between two points
  2. Find ratio in which a point divides a line segment
  3. Find area of triangle given vertices
  4. Prove collinearity using area formula

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