Optical Properties of an Ellipse

This example demonstrates the optical reflection properties of an ellipse, where light rays emanating from one focus reflect off the ellipse and converge at the other focus. Key mathematical concepts include the definition of an ellipse, foci, reflection laws, and coordinate geometry. The construction uses the GeoGebra text command 'text1' to annotate key points and properties. Suitable for high school and above students to learn about the geometric properties and applications of ellipses.