$$|z - z_0| = r$$ represents a circle with center $$z_0$$ and radius $$r$$.
In Cartesian form: $$(x - a)^2 + (y - b)^2 = r^2$$ for $$z_0 = a + ib$$.
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CAT Formulas
Complex Numbers
Equation of Circle
$$|z - z_0| = r$$ represents a circle with center $$z_0$$ and radius $$r$$.
In Cartesian form: $$(x - a)^2 + (y - b)^2 = r^2$$ for $$z_0 = a + ib$$.
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