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x+y=7 and a x^2+2h x y+a y^2=0,(a!=0) , ...

`x+y=7` and `a x^2+2h x y+a y^2=0,(a!=0)` , are three real distinct lines forming a triangle. Then the triangle is (a) isosceles (b) scalene (c) equilateral (d) right angled

A

isosceles

B

scalene

C

equilateral

D

right angled triangle

Text Solution

Verified by Experts

The correct Answer is:
A
`ax^(2) +2hxy +ay^(2) =0` is symmetrical about `y =x`
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