Восстановил проект Logic

StructureHelperLogics/Data/Shapes/IRectangle.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StructureHelperLogics.Data.Shapes
+{
+    public interface IRectangle
+    {
+        /// <summary>
+        /// Width of rectangle, m
+        /// </summary>
+        double Width { get; }
+        /// <summary>
+        /// Height of rectangle, m
+        /// </summary>
+        double Height { get; }
+        /// <summary>
+        /// Angle of rotating rectangle, rad
+        /// </summary>
+        double Angle { get; }
+    }
+}