Lines, Rays, and Segments: Basic Definitions and Symbolic Representations

This GeoGebra applet demonstrates the basic definitions and symbolic representations of points, lines, rays, segments, and angles in plane geometry. Core mathematical concepts include endpoints, directionality, collinearity, and angle notation, forming the foundation of Euclidean geometry. The construction employs GeoGebra commands Segment, Ray, Line, and Angle to create objects such as line, rayAB, segment, rayBA, and angle α, using defining points A, B, and C. Interactive buttons ButtonLineAB, ButtonRayAB, ButtonRayBA, ButtonSegmentAB, and ButtonAngle, together with text labels text1 through text6, enable dynamic comparison and classroom demonstration. Suitable for middle school geometry, introductory coordinate geometry, and teacher-led visual instruction.