sizing handles
No, they are not.
Circles don't, but the others do, if you think of squares and rectangles as parallelograms.
The ratio of three squares to five circles can be expressed as 3:5. This means for every three squares, there are five circles. The ratio shows the relative quantities of the two shapes compared to each other.
Because of the lack of squares it has.
handles
sizing handles
The small square and circles around a selected graphic, are called sizing handles. To erase a character to the right of the insertion point, press the delete key.
sizing handles
sizing handles
They are placeholders and can be used to do things like change the size or orientation of the graphic.
sizing handles
Little squares at the edges and corners of a selected graphic on your screen. You can move a handle with your mouse pointer to re-size or reshape the graphic.
Corner sizing handles are typically indicated by small squares at the corners of a shape or object. These handles can be used to resize the object by dragging them inwards or outwards. They are commonly found in graphic design software and other applications for adjusting the dimensions of elements.
The handles that you cannot hold in your hand are the little squares at the edges and corners of a graphic on the computer screen. The handle can be moved with the mouse pointer to re-size the graphic.
Sizing handles are visual indicators or controls, typically represented as small squares or circles, that appear around an object or element in graphic design, user interfaces, or software applications. They allow users to easily resize, stretch, or manipulate the dimensions of the object by clicking and dragging these handles. Sizing handles enhance usability and provide a straightforward way to adjust the size of elements without needing to enter specific measurements manually.
Those are called selection handles. They are used to resize and reposition the selected object.