Resize the polygon by programmatically..

Here I have code to draw the polygon, it is working fine..

private void DrawTriangle(bool fill)

{

var pointsCollection = new PointCollection();

pointsCollection.Add(new Point(10, 4));

pointsCollection.Add(new Point(5, 12));

pointsCollection.Add(new Point(15, 12));

pointsCollection.Add(new Point(10, 4));

var triangle = new Polygon

{

Points = pointsCollection,

Stroke = brush

};

if (fill)

triangle.Fill = brush;

canvas.Children.Add(triangle);

}

I need to resize the polygon, so I am using scaletransform to resize it.

ScaleTransform scaleTransform1 = new ScaleTransform(scalex, scaley);

triangle.RenderTransform = scaleTransform1;

but the transformation is not working here..