Point

When by a sharp tip of the pencil, mark a dot on the paper  it will be the point.

A point has only position, It has no size and an exact location. It is almost invisible.

Drag three points on a paper, they are show as dots, so we can see them
               
                          A   ⋅ 
                               B ⋅ 
                                           C  ⋅

These points are denoted by capital letters like A, B, C,…etc, and read as point A, point B, and point C.