Module 

Header 
/Engine/Source/Runtime/Core/Public/Math/UnrealMathUtility.h 
Include 
#include "Math/UnrealMathUtility.h" 
Source 
/Engine/Source/Runtime/Core/Public/Math/Vector.h 
Find the intersection of a line and an offset plane. Assumes that the line and plane do indeed intersect; you must make sure they're not parallel before calling.
FMath inline functions
The point of intersection between the line and the plane.
Parameter 
Description 

Point1 
the first point defining the line 
Point2 
the second point defining the line 
PlaneOrigin 
the origin of the plane 
PlaneNormal 
the normal of the plane 