Angle Between Two Planes in Space Geometry

This example demonstrates the calculation and visualization of the angle between two planes in space geometry. It involves core concepts like plane equations, vector dot product, and angle formulas. Construction highlights include using GeoGebra commands such as OrthogonalLine for perpendicular lines, Intersect for intersection points, Line for straight lines, Angle for angle measurement, and Plane for defining planes. Suitable for high school solid geometry instruction and exploratory learning.