Triangle, square and circle drawn in AS3

AS3 Shapes

package  {
	//import necessary classes
	import flash.display.Sprite;
	import flash.display.Graphics;
	
	public class Circle extends Sprite {
		
		private var canvas:Sprite = new Sprite();
		private var gr:Graphics = canvas.graphics;

		public function Circle() {
			// constructor code
			trace("drawing a Circle");
			drawCircle();
			drawSquare();
			drawTriangle();
			addChild(canvas);
		}
		
		//draw Circle method
		private function drawCircle():void {
			//drawing circle inside the graphics object
			gr.lineStyle(6, 0x0000FF, 0.5);
			gr.beginFill(0xFF0000, 0.5);
			gr.drawCircle(200, 200, 50);
			gr.endFill();
		}
		
		//draw Square method
		private function drawSquare():void {
			//drawing circle inside the graphics object
			gr.lineStyle(6, 0x0000FF, 0.5);
			gr.beginFill(0xFF0000, 0.5);
			gr.drawRect(100, 100, 50, 50);
			gr.endFill();
		}
		
		//draw Triangle method
		private function drawTriangle():void {
			//drawing circle inside the graphics object
			gr.lineStyle(6, 0x0000FF, 0.5);
			gr.beginFill(0xFF0000, 0.5);
			gr.moveTo(0,0);
			gr.lineTo(50,50);
			gr.lineTo(0,50);
			gr.lineTo(0,0);
			gr.endFill();
		}
	}
}