Find the equation(s) of circle passing through the points `(1, 1), (2, 2)` and whose radius is 1 unit

Find the equation (s) of the circle passing through the points (1,1) and (2,2) and whose radius 1 .

The equation of the circle passing through the point (1,1)

Find the equation of circle passing through the point (2,1), (1,2) and (8,9) .

Find the equation of circle passing through the point (2,1), (1,2) and (8,9).

Find the equation to the circle which passes through the points (1,2)(2,2) and whose radius is 1.

Find the equation of the circle passing through the points (1,1), (2,-1), and (3,2).

Find the equation to the circle which passes through the points (1,2)(2,2) and whose radius is 1. Show that there are two such circles.

Find the equation of the circle passing through the points (1,-2),(2,-1),(3,1) .

Find the equation to the circle which passes through the points (1,2)(2,2) and whose radius is 1 . show that there are two such circles (x−1) ^ 2 +(y−2) ^ 2 =1 and (x−2) ^ 2 +(y−1) ^ 2 =1

Find the equation of the circles which passes through the points A(1, 1) and B(2, 2 ) and whose radius is 1. Show that there are two such circles.