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Maths CBSE Live product
Class 9 (2026-27)
Coordinate geometry
Distance & Midpoint of two points in 2D plane
8.
Prove the points are collinear
Question:
5
m.
Check
that the given set of points are collinear.
\((y, -5)\), \((y, 7)\), \((y, 0)\)
Proof
:
Let \(A\), \(B\) and \(C\) be the points taken in order.
\(AB\) \(=\)
\(BC\) \(=\)
\(CA\) \(=\)
AB + AC = BC
BC + CA = AB
AB + BC = CA
The given points are
not collinear
collinear
.
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