Center of Circle Calculator

I know the

(x − A)² + (y − B)² = C

A

B

C (r²)

x² + y² + Dx + Ey + F = 0

D

E

F

x = A + r cos α, y = B + r sin α

A

B

Radius (r)

Angle α (°)

x₁

y₁

x₂

y₂

x₃

y₃

x₁

y₁

x₂

y₂

=

Center (h, k)

=

Center (h, k) —

Type A, B and C.

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