You may think that drawing a circle in perspective is no more difficult than drawing a circle normally and you would be wrong. It is actually a bit more complicated but there is a trick that can help.

To draw a circle you can start with a square, make sure all the sides of the square are equal in length or your circle will be deformed. why a square used will become very obvious once we start drawing in perspective.

Now we add some guide lines that we will use to construct the circle. To do this you first draw the two diagonal lines between the corners of the square. This will allow you to find the central point of the square where the lines cross. Next you draw a horizontal and a vertical line that pass through the central point of the square. Try to make these lines as straight as possible.

Next we add the circle where the edges of the circle touch the edges of the square at the points where the horizontal and vertical lines also touch the edges of the square. This should give you a reasonably accurate circle.

Now that you now know the trick to drawing a circle we will use it to draw a circle in perspective.

First like before you need to draw a square just this time you need to draw it in perspective this will create a square that is narrower at the back. You will see how this affects the circle later.

Now that we have the square we need to add the guide lines to it just as was done when creating a circle without perspective shown above. First draw the two diagonal lines between the corners of the square. This will allow you to find the central point of the square where the lines cross. Next you draw a horizontal and a vertical line that pass through the central point of the square. Note that the central point of the square is further back than it was when we were not using perspective due to the narrowing of the far end of the square.

Now add the circle as you did when drawing a circle without perspective, where the edges of the circle touch the edges of the square at the points where the horizontal and vertical lines also touch the edges of the square. But note that the side of the circle that is further away and will be smaller than that of the closer side. This is one of the ways perspective affects circles, the other is that as the circle rotates round it looks more like an oval than a circle.

By practising this it will help you go from drawing cubes in perspective to other shapes like cylinders.

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