Answer
It is a circle, with center at (1, 2) and radius = 2.
See Graph I for the graphing of the equation.
Work Step by Step
For $(x - 1)^2 + (y - 2)^2 = 4$,
it is in the form of a circle, with center at (1, 2) and radius = 2.
See Graph I for the graphing of the equation.