When the object is selected, a bounding box appears (by default, a dashed rectangular frame)
The bouding box is the smallest rectangular box with sides parallel to the x and y axis that completely encloses an object.
The bouding box is composed of a set of double-headed arrows called the handle where you can apply transformations. See handle
You will see eight arrow-shaped handles appear around the object. Now you can:
Now click the rectangle again. The handles change. Now you can:
The element considered in the calculation of the bounding box are preference dependent.
If the bouding box to use is: