For a rotation, other than of 180 degrees, it is necessary to specify whether it is clockwise or anticlockwise. Since you have not bothered to share that crucial bit of information, I cannot provide a more useful answer.
Yes, it is.
Reflection in the y-axis.
Yes, a reflection followed by a rotation can indeed be described as a single rotation under certain conditions. Specifically, if the line of reflection is positioned at an angle that bisects the angle of rotation, the combined transformation can be expressed as a single rotation about a point. This is often seen in geometric transformations where the resulting effect maintains the rotational symmetry. However, not all combinations of reflection and rotation will yield a single rotation; it depends on their relative orientations.
Transformation
transformation
rotation
Rotation.
Dilation, rotation, reflection and translation
No. It would be a diagonal.
In an isometry, the point of transformation that does not move is called the "fixed point." This point remains unchanged during the transformation, whether it is a translation, rotation, or reflection. For example, in a rotation, the center of rotation serves as the fixed point, while in a reflection, the line of reflection equidistantly bisects the space, with points on the line remaining unchanged.
A rotation of 180 degrees is equivalent to a double reflection, as both operations flip the object over twice resulting in the same final orientation.
You went 360o in the same direction, so you end up with a circle.