From their homes, virtual authorâs assistants organize the publishing process for authors anywhere in the world. A typical day might be on the phone, coordinating the activities of the author and several other professionals, doing research on the Internet and answering and sending emails.
(Jump to Area of a Rectangle or Perimeter of a Rectangle) A rectangle is a four-sided flat shape where every angle is a right angle (90Â°). Opposite sides are parallel and of equal length (so it is a Parallelogram).
A cone with its apex cut off by a plane parallel to its base is called a truncated cone or frustum. An elliptical cone is a cone with an elliptical base. A generalized cone is the surface created by the set of lines passing through a vertex and every point on a boundary (also see visual hull).