Select Object to Divide

Specifies a single geometric object such as a line, polyline, arc, circle, ellipse,
or spline.

Number of Segments

Places point objects at equal intervals along the selected objects. The number of
point objects created is one less than the number of segments that you specify.

Use PTYPE to set the style and size of all point objects in a drawing.

Block

Places specified blocks at equal intervals along the selected object. The blocks will
be inserted on the plane in which the selected object was originally created. If the
block has variable attributes, these attributes are not included.

Yes

Aligns the blocks according to the curvature of the selected object. The X axes of the inserted blocks will be tangent to, or collinear with, the selected object
at the dividing locations

No

Aligns the blocks according to the current orientation of the user coordinate system.
The X axes of the inserted blocks will be parallel to the X axis of the UCS at the dividing locations.

The illustration shows an arc divided into five equal parts using a block consisting
of a vertically oriented ellipse.