A, B, C, D are 4 non collinear points in a plane such that ∠ACB = ∠ADB, then how many circle(s) can be drawn passing through all 4 points?

A, B, C, D are 4 non collinear points in a plane such that ∠ACB = �

1.	A, B, C, D are 4 non collinear points in a plane such that ∠ACB = ∠ADB, then how many circle(s) can be drawn passing through all 4 points?
Answer» A, B, C, D are 4 non collinear points in a plane such that $∠$ ACB = $∠$ ADB, then how many circle(s) can be drawn passing through all 4 points?