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Tangents to circles

Geometry Level 3

The common tangents to the circles $x^{2}+y^{2}+2x=0$ and $x^{2}+y^{2}-6x=0$ form a triangle which is $\text{\_\_\_\_\_\_\_\_\_\_}.$

Note: Pick the best option.

isosceles equilateral right-angled scalene none of the above

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by Tanishq Varshney

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