Points, Lines, and Planes Construction Activity (Section 1.2)

① This example demonstrates how to construct geometric figures using fundamental elements such as points, lines, segments, and rays in GeoGebra, illustrating the relationships among points, lines, and planes. ② Core mathematical concepts include basic geometric elements (points, lines, planes), collinearity, intersection, parallelism, and the use of polygons and text labels. ③ Construction highlights: Based on the construction summary, commands such as Polygon, Line, Segment, and Ray are used, creating objects A, B, C, D, poly1, a, b, c, d, E, F, G, H, I, J, e, L, M, f, N, O, g, and text1, which serve to build and annotate the geometric figure. ④ Suitable for middle or high school introductory geometry, as a classroom activity or exercise to help students intuitively understand geometric concepts and basic GeoGebra operations.