# Intersection of 2 circle arcs
**URL:** https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424
**Category:** Coding Questions
**Created:** [April 18, 2019, 1:27pm UTC](https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424 "2019-04-18T13:27:13Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@CallMeGhosty](https://discourse.processing.org/u/CallMeGhosty)
#### Post date: [April 18, 2019, 1:27pm UTC](https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424/1 "2019-04-18T13:27:13Z")
Hello,
As the title says, I would like to get the X and Y coordinates of where the 2 arcs intersect.
I only know how to check if they do intersect… _hides in shame_
Challenge: Animate the drawing of the bisector of a triangle
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [April 18, 2019, 3:44pm UTC](https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424/2 "2019-04-18T15:44:44Z")
Did you look it up in Wikipedia?
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [April 18, 2019, 3:48pm UTC](https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424/3 "2019-04-18T15:48:01Z")
2nd
[http://jwilson.coe.uga.edu/emt668/EMAT6680.Folders/Howard/Bisector.of.Angle.of.TRIANGLE%20/BisectorOFAngleOFTriangle.html](http://jwilson.coe.uga.edu/emt668/EMAT6680.Folders/Howard/Bisector.of.Angle.of.TRIANGLE%20/BisectorOFAngleOFTriangle.html)
look at map() in the reference
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### Author:  [@quark](https://discourse.processing.org/u/quark)
#### Post date: [April 18, 2019, 3:54pm UTC](https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424/4 "2019-04-18T15:54:26Z")
The article Chrisir found for you shows there no need to to use arcs for this problem.
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### Author:  [@oshcha](https://discourse.processing.org/u/oshcha)
#### Post date: [October 24, 2022, 11:07am UTC](https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424/5 "2022-10-24T11:07:40Z")
I have same/similar question - how to get coordinates of 2 intersecting arcs (parts of circle not ellipsis) (possible 0, 1, 2 intersection points) ?
I have found solution for finding interesection of 2 circles - [Find the intersections (two points) of two circles, if they intersect at all · GitHub](https://gist.github.com/jupdike/bfe5eb23d1c395d8a0a1a4ddd94882ac)
So what remains is find if these points belong to both arcs (parts of circle).
Any suggestions about this?
@quark I saw in some other comments you mention that you have done intersection with other simpler shapes, maybe you have also done for arcs?
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### Author:  [@quark](https://discourse.processing.org/u/quark)
#### Post date: [October 25, 2022, 8:02am UTC](https://discourse.processing.org/t/intersection-of-2-circle-arcs/10424/6 "2022-10-25T08:02:49Z")
I don’t have a ready-made solution to find the intersection of two circular arcs and since I am away from my computer I can’t develop one for you but I can suggest an algotithm you might use.
**Step 1**
Assume that the arcs are two full circles and calculate the intersection points (if any)
**Step 2**
For each intersection point calculate the angle made for each circle using `atan2(iy - cy, ix - cx)` and see if the angle lies within the arc range. If it does for both arcs then you have a valid intersection point.