const function: bool is_circular (void)Returns
trueif theCircleis circular, otherwisefalse.Certain transformations, such as shearing and scaling, can cause
Circlesto become non-circular.Circle c(origin, 3, 90); cout << c.is_circular(); -| 1 Circle d = c; d.shift(2.5); d.scale(2, 3); cout << d.is_circular(); -| 0
![]()
Fig. 176.