======Метод PolylineExtentions.GetArea2D(IPolyline3D)======
  * **Пространство имен:** [[developers:references:topomatic.cad.foundation|Topomatic.Cad.Foundation]]
  * **Сборка:** Topomatic.Cad.Foundation (в Topomatic.Cad.Foundation.dll)
=====Синтаксис=====
<code csharp>public static double GetArea2D(IPolyline3D polyline)</code>
**Параметры**
  * //polyline//
    * Тип: [[developers:references:topomatic.cad.foundation.ipolyline3d|Topomatic.Cad.Foundation.IPolyline3D]]

**Возвращаемое значение**
  * Тип: System.Double