[Modify > Transform > Reflect...], <Ctrl + Alt + F>
- Horizontal (X-axis)
Flips the object vertically with the X-axis set as a criterion. - Vertical (Y-axix)
Flips the object horizontally with the Y-axis set as a criterion. - Angle
Specifies the angle to be applied to the X-axis or Y-axis by which the object flips. - Copy
Copies the flipped object. - Transform Gradient
Transforms the gradient applied to the object as well. - Transform Pattern
Transforms the pattern applied to the object as well.
When you type in 180 or 360 for the Angle, the object is flipped vertically, applying the same effect as selecting Horizontal (X-axis). When you type in 90 or 270 for the Angle, the object is flipped horizontally, applying the same effect as selecting Vertical (Y-axis).