I have created triangle, I want to create lines inner it. I successfully created some lines, but the space between other line is not same (sometimes further sometimes closer).

Lets look below image that I have created on Photoshop


That I want ask, How to create a collection of blue line (path) in above example with same space between each other? It's there tool in Illustrator to make 4 or 6 line with same space? thanks in advance

  • What if you form the big triangle from small triangle objects?
    – Joonas
    Commented Jan 17, 2018 at 8:42
  • I think that's bad idea. Indirectly I must copied much of Triangle and arrange them position on by one. Commented Jan 17, 2018 at 8:54
  • It’s definitely a good idea. Using smart guides and ‘transform again’ you could assemble this from lots of little triangles in no time at all. Try that.
    – Westside
    Commented Jan 17, 2018 at 9:13
  • Draw one side and one set of cutting lines then rotate by 120 degrees. Is your aim a picxel graphic or a print graphic? (If its for screem you may consider deviating form 120 a bit so that the pixels go even in yoru design)
    – joojaa
    Commented Jan 17, 2018 at 9:23
  • You had better to answer and explain your idea and how to do that. It'll be helpful for me. thanks Commented Jan 17, 2018 at 9:26

3 Answers 3


You can create the lines with a few Transform effects.

  1. Draw a single horizontal line

  2. Add a Transform effect (Effect → Distort & Transform → Transform...) with some vertical movement and a number of copies...

  3. Add a second Transform effect to the same line. Set the rotation angle to 60 degrees and the number of copies to 2...

  4. You can then go to Object → Expand Appearance to expand the lines (and use the Shape Builder tool or Pathfinder etc. if you want to construct shapes from the lines)

  • but step 4 is not clear for me, I can expand the object and result much of path, how to remove the unused outside small triangle? Commented Jan 18, 2018 at 2:26
  • can you give me detail how to construct the object as you say? Commented Jan 18, 2018 at 2:30
  • @EngkusKusnadi using Shape Builder you just click+drag to create shapes or using Pathfinder's Divide will turn all the triangles in to their own shapes; it's then just a case of deleting the ones you don't need (I used the Lasso to select what I wanted to keep then inverted the selection and deleted)
    – Cai
    Commented Jan 18, 2018 at 9:18
  • 1
    See for example, with Shape Builder: i.sstatic.net/J4gB2.gif ...or Pathfinder: i.sstatic.net/Ftua0.gif
    – Cai
    Commented Jan 18, 2018 at 9:22

Like I said in my comment, one way would be to Lego it up and use small triangles to form the big one.

You could make the gap with a stroke by aligning it inside so that you can easily snap them together. If you move the first triangle holding down Alt, you can repeat that with Cmd+D.

So basically:

  1. Make the first triangle
    • I used red stroke to make aligning easier.
  2. Copy / Move using mouse while holding down Alt
  3. Repeat using Object > Transform > Transform again (Cmd+D)
    • Repeat until you got enough for the half of the bottom row
  4. Group it Cmd+G
  5. Copy Cmd+C
  6. Paste in place Cmd+F
  7. Rotate. I used Free transform tool E.
  8. Align so that the saw teeth match.
    • You could do this by drawing a disposable rectangle. Size doesn't really matter as long as the right side is touching the vertical cernter of the right most triangle in the bottom half. Select that and the top half of the first row and use Window > Align with key object being the rectangle.
  9. Copy / Move the whole bottom row using mouse while holding down Alt
  10. Repeat using Object > Transform > Transform again (Cmd+D)
    • Repeat until you got enough to form the big triangle
  11. Remove the extra triangles.
    • First I selected all of the triangles and then I used Shape builder tool Shift+M to unify the triangles I didn't need. Then I just selected them with the Selection Tool V and backspaced them out of my life.

enter image description here

  • @EngkusKusnadi, I added a gif of the process. It is like a minute long. There are browser extensions that let you pause and rewind gifs, like this one for Chrome: GIF Scrubber
    – Joonas
    Commented Jan 17, 2018 at 10:00
  • It's very difficult to snap on Step no. 8. I have turn on the Smart Guide, hold ctrl while dragging, but still not work. Commented Jan 18, 2018 at 2:50
  • @EngkusKusnadi I did appear to miss a step there, that is about aligning the top half of the bottom row. I suspect this is where you were stuck. I added a simple way to to align it perfectly.
    – Joonas
    Commented Jan 18, 2018 at 6:37

I think a single tool can help you with this "Rectangular Grid Tool"

enter image description here

If you double click the icon, a popup will appear and you can enter the detail..

enter image description here

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