Serlio 2
| 1 | Construct two tangent circles, a third circle that runs through the centers of the first two and define the points I, K, L and M. |
| 2 | Extend the edges of the square KLIM and define the points 1, 2, 3 en 4. |
| 3 | Construct the circular arcs from 1 to 2 with center L and from 3 to 4 with center M. |
| 4 | Drag the point K and change the dimensions of the oval. |
