circle

Related Questions

• If the circles ${{x}^{2}}+{{y}^{2}}+2ax+cy+a=0$ and ${{x}^{2}}+{{y}^{2}}-3ax+dy-1=0$ intersect in two distinct points $P$ and $Q$ then the line $5x+by-a=0$ passes through $P$ and $Q$ for

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• $x=7$ touches the circle ${{x}^{2}}+{{y}^{2}}-4x-6y-12=0$ , then the coordinates of the point of contact are

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• The equation of the circle through the points of intersection of ${{x}^{2}}+{{y}^{2}}-1=0$ , ${{x}^{2}}+{{y}^{2}}-2x-4y+1=0$ and touching the line $x+2y=0$ , is

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• If the circles ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ and ${{x}^{2}}+{{y}^{2}}-2gx+{{g}^{2}}-{{b}^{2}}=0$ touch each other externally, then

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• If a circle and a square have the same perimeter, then

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