First slide

Equation of line in Straight lines

Question

The points $(a, b + c), (b, c + a)$ and $(c, a + b)$ are

Moderate

A

vertices of an equilateral triangle
B

concyclic
C

vertices of a right angled triangle
D

none of these

Solution

As the given points lie on the line $x + y = a + b + c,$ they are collinear.

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