These are all Geometry classes available in WPF.
Name Description
LineGeometry This geometry is equals to the Line shape and representing a straight line.
RectangleGeometry This geometry is equals to the Rectangle shape and representing a Rectangle.
EllipseGeometry This geometry is equals to the Ellipse shape and representing a Ellipse.
GeometryGroup Adds any number of Geometry objects to a single path, using the EvenOdd or NonZero fill rule to determine what regions to fill.
CombinedGeometry This geometry is used to merge the two geometries into one geometry and it have a property CombineMode that allows you to choose how they two geometry are combined.
PathGeometry Represents a more complex figure that's composed of arcs, curves, and lines, and can be open or closed.
StreamGeometry The StreamGeometry saves memory because it doesn't hold the individual segments of your path in memory all at once.