Mainly practicing the connection of arcs, as well as TTR commands and annotations.
- Draw auxiliary lines
- Draw two circles at both ends, with diameters of 12 and 6 respectively
- Draw two circles of R21 and R27
- Draw two circles of R31 and R37
- Draw two tangent circles of R50 and R55 using TTR command line
- Use Trim command line to trim off the excess parts
- Add annotations