---
title: utils.circlesIntersect()
---
The `utils.circlesIntersect()` function finds the intersections between two
circles described by their center point and radius.
## Signature
```js
array | false utils.circlesIntersect(
Point centerA,
float radiusA,
Point centerB,
float radiusB,
string sort = 'x'
)
```
The 5th and last parameter controls the _sorting_ of the found intersections.
When this returns 2 intersections, you can choose how they are ordered in the returned array:
Set sort to:
- `x` : The point with the lowest X-coordinate will go first (left to right)
- `y` : The point with the lowest Y-coordinate will go first (top to bottom)
## Example
<Example caption="A Utils.circlesIntersect() example">
```js
({ Point, points, Snippet, snippets, utils, part }) => {
points.A = new Point(10, 10)
.addCircle(15, "fabric")
points.B = new Point(30, 30)
.addCircle(35, "fabric")
points.C = new Point(90, 10)
.addCircle(15, "various")
points.D = new Point(110, 30)
.addCircle(35, "various")
const intersections1 = utils.circlesIntersect(
points.A,
points.A.attributes.get("data-circle"),
points.B,
points.B.attributes.get("data-circle")
)
const intersections2 = utils.circlesIntersect(
points.C,
points.C.attributes.get("data-circle"),
points.D,
points.D.attributes.get("data-circle"),
"y"
)
snippets.first1 = new Snippet("bnotch", intersections1[0])
snippets.second1 = new Snippet("notch", intersections1[1])
snippets.first2 = new Snippet("bnotch", intersections2[0])
snippets.second2 = new Snippet("notch", intersections2[1])
return part
}
```
</Example>
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