Requirements

Required: .NET Framework 4.0
Recommended: H3Viewer, an improved MS Help 3 Viewer by The Helpware Group

WW.Math 4.0

WW.Math is a .NET math component featuring:

2D and 3D points and vectors (plus 4D vectors).
2D, 3D and 4D matrices.
2D, 3D lines, rays, segments, polylines, polygons.
3D planes.
Vector and matrix multiplication, matrix inversion etc.
Constrained Delaunay Triangulation (2D, holes allowed).
2D polygon boolean operations (intersection, subtraction, union).
Polygon area, centroid calculation.
Uses structs for optimal speed.

See here for an online demo of WW.Math's 2D polygon and polyline clipping algorithm.

$WW.Math 3D rendering with GDI+$	Add 3D to your GDI+ application using transformation matrices.
$WW.Math polygon intersection screenshot$	2D polygon intersection.
$WW.Math triangulation screenshot$	Triangulation of a 2D polygon with holes.

Acknowledgements

Thanks go out to Eran Kamp for allowing this product to be spawned from his original Sharp3D.Math library (discontinued, but still available from codeplex).