What is rotation then translation?
Rotation then translation is a sequence of two transformations that are performed in order: first a rotation, and then a translation.
In this sequence, an object is first rotated by a certain angle around a point (usually the origin or a specified point). This rotates the object around this point in a rotational motion.
After the rotation is performed, the object is then translated by a certain distance in a specified direction. The object is moved parallel to the given direction, maintaining the same orientation as it had after the rotation.
This sequence of transformations is commonly used in geometry and computer graphics to manipulate and transform objects in a desired manner.