This little set of what I called "Geometric Forms in Circles" are quick studies I made of some stunning Promotional artwork for "Electric Minds: Loft Parties 2012", a venue in Shoreditch, London. The originals are finely textured and have great typography giving the event details, but I simply wanted to recreate the geometry of the original artists.
The simplicity and clean lines of the orignals are inspiring, and illustrates the beauty which can be achieved with simple geometry. The radial spokes were created by marking a diameter across the circle with the Pen Tool, and the using the Rotate tool to send it through a rotation of set degrees (360/n). Upon this set of spokes, other geometry could be drawn - circles in the first two examples, then lines and hexagons in the last two.
Making sure that all intersects are complete and clean, selecting all the lines you can then use the Live Paint Tool to fill in alternating shapes with black, leaving a blank space between. This space for a second colour can be supplied by having a copy of the original outer perimeter circle, and setting it's fill to a suitable second colour.
Alternatively, as in the case with the hexagon example, shades or tints of the background can be added to create tonal interest, again using the Live Paint Tool.
[Fun Note: The Live Paint Tool lives on the same menu button as the Shape Builder tool. Why I mention this is that while creating the hexagon-based version below, I started to notice some extreme processor lag, as thought it were suddenly performing massive calculations? Well, it was! Inadvertantley, I selected the Shape Builder tool when shading, which meant each time a filled shape was created, Adobe Illustrator was recalculating all the other shapes at the same time!! So just a note for should you ever experience this - check you have the right tool from the menu!]