How can we draw a semi circle or half a circle in Photoshop CS3? WE can draw a complete circle by using the shape method or tool. If we want to crop the image to get a semi circle or half a circle, When we crop an image usually the image is cropped and resized in the background of the layer to form the whole layer. If we want to create a half circle, what will be the procedure. I am using Adobe Photoshop CS3.