XNA Math Library – Math library from XNA which is planned for the SDK.
Triangle Sample – Draw a simple triangle by specifying vertices with position and color.
Color Cube Sample – Draw a rotating cube with solid or gradient color faces.
Animated Textured Cube Sample – Draw a rotating cube with texture shaded faces.
Controllable Textured Cube Sample – Draw a textured cube that can be rotated by Silverlight UI controls.
Solar Wind Sample – Draw the Earth with day and night transitions, atmosphere layers, and population density overlays. Demonstrates more advanced concepts like mipmaps, texture blending, multiple drawing passes, sampler states, and lighting.