Datrys (x-h)^2+(y-k)^2=tau^2

$$( x - h ) ^ { 2 } + ( y - k ) ^ { 2 } = \tau ^ { 2 }$$

Datrys ar gyfer h (complex solution)

$$h=\sqrt{2\pi ^{2}-k^{2}+2ky-y^{2}}+x$$

$$h=-\sqrt{2\pi ^{2}-k^{2}+2ky-y^{2}}+x$$

Datrys ar gyfer k (complex solution)

$$k=\sqrt{2\pi ^{2}-h^{2}+2hx-x^{2}}+y$$

$$k=-\sqrt{2\pi ^{2}-h^{2}+2hx-x^{2}}+y$$

Datrys ar gyfer h

$$h=\sqrt{2\pi ^{2}-k^{2}+2ky-y^{2}}+x$$

$$h=-\sqrt{2\pi ^{2}-k^{2}+2ky-y^{2}}+x\text{, }y\geq k-\pi \sqrt{2}\text{ and }y\leq k+\pi \sqrt{2}$$

Datrys ar gyfer k

$$k=\sqrt{2\pi ^{2}-h^{2}+2hx-x^{2}}+y$$

$$k=-\sqrt{2\pi ^{2}-h^{2}+2hx-x^{2}}+y\text{, }x\geq h-\pi \sqrt{2}\text{ and }x\leq h+\pi \sqrt{2}$$