# How do I split a circle shape into diaphragm-like segments in Illustrator?

How can I make a vector image like this using illustator? (I'm interested in the shape of the triangles) I'm moving from Photoshop to Illustrator and I have some difficulties...

• What have you tried? How would you do this in Photoshop? Why isn't that working in Illustrator for you? In general, you create the triangles then clip or cut them to the circle, you don't modify a circle from the onset. May 5, 2015 at 19:55
• Hi Giulio Cantadori, you will need to learn how to use the pathfinder options. Illustrator Help / Combining objects. For this specific effect, you can watch a video tutorial like this one: Adobe Illustrator | Shutter Icon Tutorial May 5, 2015 at 19:57
• Please make an edit to your question with what you've tried. May 5, 2015 at 20:06
• This is a much better question than i originally anticipated... I think its good as is. May 6, 2015 at 11:18

Look at what you have. Circle divided in 6 pieces. divide circle into 6 pieces for starter. It is symmetrical by rotation. Draw one piece and copy. the triangle is pointing one side horizontally. This is what you get:

Image 1: how i would do it

1. draw circle (mark center out with guides)
2. Draw line at 80 degrees
3. trim lines with shape builder
4. rotate back by 30 degrees
5. move point to verical with lower edge
6. rotate and repeat (ctrl+d)
7. color
8. make stroke wider white
9. outline

...

Ammendum:

If you want to be entirely accurate (my eyeball did this it very close but not perfect) note that the line has to satisfy following criteria:

Image 2: The geometric problem to solve.

PS: yes its the mirror image

• Thats really interesting to see how you made that. I would have made basic triangles then used pathfinder to intersect or exclude the circle. Im not too familiar with Illustrator. Your way looks much more pro :)
– Lex
May 6, 2015 at 7:45
• @Lex there more then one way to do this for sure.. if id do this again id use offset as a live effect rather than the expansion of a stroke.... oh well. May 6, 2015 at 9:44
• @Lex your comment helped me appreciate the problem a bit more and realize i left something out of my sequence that might not be obvious. So i added a section. TY... and now you all have to suffer my engineering mind :P Muhahaha May 6, 2015 at 11:34

1. now break each anchor in the hexagon shape by selecting with the white arroe each anchor and click over `cut path at selected anchor points` select two by two because if select it all the cut path command will disappear as you select all the object not some anchors of it.
1. give a stroke to those line and convert strokes into path. by selecting all lines and apply 10 point stroke then go the `objects>path>outline stroke`
2. sill the shape selected use sift to select the circle and go to the pathfinder panel and choose `Minus Front` and ungroup the result and delete the generated hexagon generated by our last operation. That's it.