Exploring the Transformation Relationship Between Triangle UBC and RAT
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Congruent Similar or Neither
This GeoGebra worksheet investigates the relationship between triangle UBC and triangle RAT by illustrating a composition of geometric transformations. It begins by constructing triangle UBC with the Polygon command, then applies a rotation using Rotate to produce the image triangle A'B'C'. A vector defined by Vector is then used with Translate to shift the rotated triangle into the position of triangle RAT. Throughout the construction, auxiliary circles are drawn with Circle, new points are created using Point, and their intersections are found via Intersect to locate corresponding vertices. The activity covers key concepts such as rotation, translation, vector addition, congruence or similarity of triangles, and circle intersection properties. Ideal for high‑school geometry students learning about rigid motions and transformation geometry, as well as for teachers preparing lessons on vector‑based transformations or contest problems.
GeoGebra Commands & Parameters
Polygon(U, B, C) → t1, c, a, bRotate(U, 67°, C) → A'Rotate(B, 67°, C) → B'Rotate(C, 67°, C) → C'Polygon(A', B', C') → t1', c', a', b'Vector(C, D) → uTranslate(A', u) → A''Translate(B', u) → ATranslate(C', u) → TPolygon(A'', A, T) → t1'', c'', a'', b''Vector(C, C') → vTranslate(A'', v) → A'''Circle(U, 0.8) → dPoint(d) → EVector(E, U) → wTranslate(A'', w) → RPolygon(D, A, R) → t2, a'''_1, d_1, fIntersect(c, b) → F