XNA4Primitives3DOrientation
CreateFromYawPitchRoll – rotations in local coordinate system
CreateRotationX/Y/Z multiplication – rotations in world coordinate system

Matrix R1, R2, Rx, Ry, Rz;
Ry = Matrix.CreateRotationY(MathHelper.ToRadians(60.0));
Rx = Matrix.CreateRotationX(MathHelper.ToRadians(30.0));
Rz = Matrix.CreateRotationZ(MathHelper.ToRadians(45.0));
R1 = Ry * Rx * Rz;
R2 = Matrix.CreateFromYawPitchRoll(MathHelper.ToRadians(60.0),
      MathHelper.ToRadians(30.0),
      MathHelper.ToRadians(45));
R1 != R2
9169834143.zip

XNA4Primitives3DTransformation – Draw multiple primitives (using transformation matrix)3453321048.zip

XNA4BoxTransformation – Draw 2 Colored Cubes (using Transformation Matrix)5990633197.zip

http://xbox.create.msdn.com/ko-KR/education/catalog/sample/primitives_3d
XNA4 Primitives3DSample_41454810108.zip

XNA4 DrawGeometryPrimitives2D (Line, Triangle, Quad, Pentagon, Hexagon, Octagon)4093533285.zip