# Function intersect #

Calculates the point of intersection of two lines in two or three dimensions and of a line and a plane in three dimensions. The inputs are in the form of arrays or 1 dimensional matrices. The line intersection functions return null if the lines do not meet.

Note: Fill the plane coefficients as `x + y + z = c` and not as `x + y + z + c = 0`.

## Syntax #

``````math.intersect(endPoint1Line1, endPoint2Line1, endPoint1Line2, endPoint2Line2)
math.intersect(endPoint1, endPoint2, planeCoefficients)
``````

### Parameters #

Parameter Type Description
`w` Array | Matrix Co-ordinates of first end-point of first line
`x` Array | Matrix Co-ordinates of second end-point of first line
`y` Array | Matrix Co-ordinates of first end-point of second line OR Co-efficients of the plane’s equation
`z` Array | Matrix Co-ordinates of second end-point of second line OR null if the calculation is for line and plane

### Returns #

Type Description
Array Returns the point of intersection of lines/lines-planes

## Examples #

``````math.intersect([0, 0], [10, 10], [10, 0], [0, 10])              // Returns [5, 5]
math.intersect([0, 0, 0], [10, 10, 0], [10, 0, 0], [0, 10, 0])  // Returns [5, 5, 0]
math.intersect([1, 0, 1],  [4, -2, 2], [1, 1, 1, 6])            // Returns [7, -4, 3]
``````