This video show how to complete the extra practice number 8 from Tutorial 1-6.
It uses an option of the CIRCLE command called "TTR" (Tangent, Tangent, Radius). You may not use this a lot, but when you do need it you'll be very thankful that you know about it.
It's tough to remember all of the options that a command can have, but they're there for a reason. When you have time, explore these options and learn them.
Review these techniques and make them second nature to you while drafting. For more information, review Tutorial 1-6.