Step 2: Tessellation 2

① This example demonstrates how to create a tessellation (tiling) pattern by repeatedly translating and rotating a base polygon (such as a triangle or quadrilateral) to cover the plane. ② Core mathematical concepts include plane tessellation, translation, rotation, vectors, and vertex correspondence, along with natural numbers (step count) and expected value (possibly referring to repetition count). ③ Construction highlights: From the summary, the GeoGebra commands used are Polygon, Segment, Vector, and Translate; objects include base polygon poly1, multiple vertices (A, B, C, D, etc.), translation vector u, and translated copies (A', B', a', etc.), generating repeated units via successive translations. ④ Suitable for upper middle school or high school students, this is ideal for exploring geometric transformations and tessellation, and can serve as an introductory activity in mathematical art or design classes to visualize how translations create patterns.