Normally, when drawing rectangles in Autodesk® AutoCAD®.

if you want to add an angle, use the R key to rotate it and then draw it by specifying a second point.

With ThreePointRectangle, you can freely draw a rectangle by simply clicking on the three points without pressing the R key.

However, like the rectangle command in AutoCAD, it is not possible to draw by specifying angles or coordinates.

Therefore, it is useful when drawing by tracing an image rather than by coordinates, such as when tracing a map.