diff --git a/AIStudio.Wpf.DiagramApp/ViewModels/DrawingViewModel.cs b/AIStudio.Wpf.DiagramApp/ViewModels/DrawingViewModel.cs
index 0cdcd76..6fa3cd1 100644
--- a/AIStudio.Wpf.DiagramApp/ViewModels/DrawingViewModel.cs
+++ b/AIStudio.Wpf.DiagramApp/ViewModels/DrawingViewModel.cs
@@ -1,14 +1,9 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows;
 using AIStudio.Wpf.DiagramApp.Models;
 using AIStudio.Wpf.DiagramDesigner;
-using AIStudio.Wpf.DiagramDesigner.Additionals;
-using AIStudio.Wpf.Mind.Models;
 
 namespace AIStudio.Wpf.DiagramApp.ViewModels
 {
@@ -96,16 +91,28 @@ namespace AIStudio.Wpf.DiagramApp.ViewModels
             DiagramViewModel.Add(close);
 
             DesignerItemViewModelBase heart = new SharpDrawingDesignerItemViewModel(DiagramViewModel, DrawMode.ErasableHeart, new List<Point> { new Point(138, 238), new Point(218, 318) }, true);
-            DiagramViewModel.Add(heart);
+            DiagramViewModel.Add(heart);        
 
-            DesignerItemViewModelBase directLine = new DirectLineDrawingDesignerItemViewModel(DiagramViewModel, new List<Point> { new Point(238, 238), new Point(298, 258), new Point(258, 298), new Point(318, 318) }, true);
-            DiagramViewModel.Add(directLine);
-
-            DesignerItemViewModelBase polyline = new PolylineDrawingDesignerItemViewModel(DiagramViewModel, new List<Point> { new Point(338, 238), new Point(398, 258), new Point(358, 298), new Point(418, 318) }, true);
+            DesignerItemViewModelBase polyline = new PolylineDrawingDesignerItemViewModel(DiagramViewModel, new List<Point> { new Point(238, 238), new Point(298, 258), new Point(258, 298), new Point(318, 318) }, true);
             DiagramViewModel.Add(polyline);
 
-            DesignerItemViewModelBase polygon = new PolygonDrawingDesignerItemViewModel(DiagramViewModel, new List<Point> { new Point(438, 238), new Point(498, 258), new Point(458, 298), new Point(518, 318) }, true);
+            DesignerItemViewModelBase polygon = new PolygonDrawingDesignerItemViewModel(DiagramViewModel, new List<Point> { new Point(338, 238), new Point(398, 258), new Point(358, 298), new Point(418, 318) }, true);
             DiagramViewModel.Add(polygon);
+
+            //画正方形
+            var drawingPoint1 = DrawingHelper.GetPoints(new Point(38, 338), 0, Enumerable.Repeat(new System.Tuple<double, double>(80, 90), 4).ToList());
+            DesignerItemViewModelBase directLine1 = new DirectLineDrawingDesignerItemViewModel(DiagramViewModel, drawingPoint1, true);
+            DiagramViewModel.Add(directLine1);
+
+            //画三角形
+            var drawingPoint2 = DrawingHelper.GetPoints(new Point(138, 338), 0, Enumerable.Repeat(new System.Tuple<double, double>(80, 120), 3).ToList());
+            DesignerItemViewModelBase directLine2 = new DirectLineDrawingDesignerItemViewModel(DiagramViewModel, drawingPoint2, true);
+            DiagramViewModel.Add(directLine2);
+
+            //画五边形
+            var drawingPoint3 = DrawingHelper.GetPoints(new Point(238, 338), 0, Enumerable.Repeat(new System.Tuple<double, double>(100, 72), 5).ToList());
+            DesignerItemViewModelBase directLine3 = new DirectLineDrawingDesignerItemViewModel(DiagramViewModel, drawingPoint3, true);
+            DiagramViewModel.Add(directLine3);
         }
 
         public override void Dispose()
diff --git a/AIStudio.Wpf.DiagramDesigner/Helpers/DrawingHelper.cs b/AIStudio.Wpf.DiagramDesigner/Helpers/DrawingHelper.cs
new file mode 100644
index 0000000..a87620c
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/Helpers/DrawingHelper.cs
@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public static class DrawingHelper
+    {
+        public static List<Point> GetPoints(Point startPoint, double angle, List<Tuple<double, double>> angleAndWidth)
+        {
+            List<Point> points = new List<Point>();
+            points.Add(startPoint);
+
+            Point thisPoint= startPoint;           
+            double thisAngle = angle;
+
+            Point nextPoint;
+            foreach (var item in angleAndWidth)
+            {
+                nextPoint = GetEndPointByTrigonometric(thisPoint, thisAngle, item.Item1);
+                points.Add((Point)nextPoint);
+
+                thisPoint = nextPoint;
+                thisAngle = thisAngle + item.Item2;
+            }
+
+            return points;
+        }
+
+
+        /// <summary>
+        /// 通过三角函数求终点坐标
+        /// </summary>
+        /// <param name="angle">角度</param>
+        /// <param name="startPoint">起点</param>
+        /// <param name="distance">距离</param>
+        /// <returns>终点坐标</returns>
+        public static Point GetEndPointByTrigonometric(Point startPoint, double angle,  double distance)
+        {
+            //角度转弧度
+            var radian = (angle * Math.PI) / 180;
+
+            //计算新坐标 r 就是两者的距离
+            Point endPoint = new Point(startPoint.X + distance * Math.Cos(radian), startPoint.Y + distance * Math.Sin(radian));
+
+            return endPoint;
+        }
+
+    }
+}