How it works ?
- Any translation can be expressed as the composition of two reflections.
- In the sketch below, triangle A’B’C’ is the result of translating triangle ABC by vector v. Triangle A”B”C” is the result of reflecting triangle ABC over m followed by n.
- Play with the sketch, and decide how to compose and to produce a translation by dragging lines m and n until triangle A”B”C” coincides with triangle A’B’C’.
- Is the composition unique?