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Standard Equation of a Circle
$$ (x-h)^2+(y-k)^2=r^2 $$
Terminology
- $$(h,k)$$ → Centre of the circle.
- $$r$$ → Radius of the circle.
Usage
- Used when the centre and radius are known.
- Every point $$(x,y)$$ on the circle satisfies this equation.
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Standard Equation of a Circle
$$ (x-h)^2+(y-k)^2=r^2 $$
Terminology
- $$(h,k)$$ → Centre of the circle.
- $$r$$ → Radius of the circle.
Usage
- Used when the centre and radius are known.
- Every point $$(x,y)$$ on the circle satisfies this equation.
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