I'd like to have a circle divided into 4 fans, each of them is identical, if I draw the fan using edit tool, it is quite hard to get a perfect circle when four fans are combined.

Is there any trick to do this?

What I am trying to achieve is drawing a slice of a pie chart. enter image description here


2 Answers 2


Here’s one way to do it:

  • Draw a circle and some rectangles.
  • Snap the rectangles to the center of the circle.
  • Drag out points as needed.
  • Select the circle.
  • Choose Use As Mask from the Layer menu.
  • The rectangles should now be masked by the circle.

Sketch pie chart

  • This is near the solution, but I want only one slice of the pie chart
    – CarmeloS
    Jan 25, 2015 at 9:29
  • I got it, I use a triangle and a circle and choose the union area of them
    – CarmeloS
    Jan 25, 2015 at 9:31
  • That will work, but depending on how you’re compositing things (and if there’s many items), you might end up with some bad edges due to the way antialiasing is composited. Jan 25, 2015 at 9:52

A little tedious but crips with Gradient tool:

  1. Draw a circle
  2. Apply Angular Gradient Fill (there will be two colors selected by default)
  3. Double click in the color strip to add additional colors
  4. Move the gradient points to the values needed for a crisp edge

http://www.sketchtips.info/articles/how-to-make-a-pieSketch Pie Chart With Angular Gradient Tool

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