Polygons: first steps (GER)
Polygons: first steps (GER) — Items 7 — Geometric Transformations and Polygons、Geometric Construction of Inscribed Polygons and Rectangle Division in a Unit Ci、Colin 2 Geometric Construction
Polygons: first steps (GER) — Items 7 — Geometric Transformations and Polygons、Geometric Construction of Inscribed Polygons and Rectangle Division in a Unit Ci、Colin 2 Geometric Construction