1 This implies that the other two sides are of equal length, and that the diagonals are of equal length. 2  An alternative definition is: a quadrilateral with an axis of symmetry bisecting one pair of opposite sides. 3  Trapezium (NAm.): no sides are parallel.
An enumeration date commonly refers to the official or control date set for a particular enumeration event such as a census. The official enumeration date may vary from one enumeration to the next. The enumeration date is a control function for collecting data over a broad space of time. All data collected is based on its validity as of a single date, no matter what date the information is taken within the enumeration period.
An NPI is a 10 digit numerical identifier for providers of health care services. It is. national in scope and unique to the provider. Whereas in the past, a provider had a. different identification number for each payer, after May 23, 2007, a provider will. have a single identifier that will be used across all payers.