Well, CC3 handles length, angles and general math very well, so a starting point with any geometric figure is to figure out how to describe it mathematically, then use relative coordinates to input into CC3, either by using the @-notation to specify x/y distance, or the angular notation to specify length/angle.
Another way is to set up a small grid and then just draw your shapes. For example, I created a new map and drew the images shown below in a just a couple of minutes. I've attached the CC3 file for anyone who's interested. The grid being used is a 1 mile, 4 snap grid but you can always set up a different grid. The map has a frame but I removed the background.
Comments
Creating vector symbols is on pg. 84
Creating raster symbols (in GIMP) is on pg. 87
You do own ToUM right. (Nod your head)
Hope this helps.
BoomerET
Cheers,
~Dogtag
It's not necessarily mathematically perfect this way but it's pretty quick. Also, you can tweak the grid settings for higher precision.
~Dogtag