The triangle formed by the pair of lines 2x2+4xy+2y2=0 and the line x+2y+3=0 is
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a
Equilateral
b
Isosceles
c
Right-angled
d
Does not exist
answer is D.
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Detailed Solution
The given equation is 2x2+4xy+y2=0Observing the equation a=2,h=2,b=2It implies h2=abThe pair of lines represent coincide lines. Then triangle does not exist.