circle

Related Questions

• If the line $lx+my+n=0$ be a tangent to the circle ${{(x-h)}^{2}}+{{(y-k)}^{2}}={{a}^{2}},$ then

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• The circle ${{x}^{2}}+{{y}^{2}}+4x-4y+4=0$ touches

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• Locus of the centre of the circle touching both the co-ordinates axes is

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• The equations of the tangents to circle $5{{x}^{2}}+5{{y}^{2}}=1$ , parallel to line $3x+4y=1$ are

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• For $a{{x}^{2}}+2hxy+3{{y}^{2}}+4x+8y-6=0$ to represent a circle, one must have

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