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Subjects
Mathematics State Board
Class 9
Coordinate Geometry
Co-ordinate system and Properties of distance
19.
Five marks exercise problems V
Exercise condition:
5
m.
Determine whether the given set of points in each case are collinear or not.
\((a, -2)\), \((a, 3)\), \((a, 0)\)
Proof
:
Let \(A\), \(B\) and \(C\) be the points taken in order.
\(AB\) \(=\)
\(BC\) \(=\)
\(CA\) \(=\)
BC + CA = AB
AB + AC = BC
AB + BC = CA
The given points are
collinear
not collinear
.
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