# Circle

Keywords:

**The equation of a centred circle**

$${x}^{2}+{y}^{2}={r}^{2}$$

**The general equation of a circle**

$$(x-a{)}^{2}+(y-b{)}^{2}={r}^{2}$$

Keywords:

**The equation of a centred circle**

$${x}^{2}+{y}^{2}={r}^{2}$$

**The general equation of a circle**

$$(x-a{)}^{2}+(y-b{)}^{2}={r}^{2}$$