1. Explain what is a reflection in the Poincaré Disk. 2. Show that a reflection in the Poincaré Disk sends points on one side of the line to the other side of the line, and keeps points on the line invariant. 3. Show that any point can be move to another point by two reflections. 4. Show that any two rays sharing the same endpoint can be transformed into each other by a reflection. 5. (Harder) Can we define the translation (as in R²) as a rigid motion in the Poincaré Disk? Explain your answer

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Rigid Motion in Poincaré Disk
1. Explain what is a reflection in the Poincaré Disk.
2. Show that a reflection in the Poincaré Disk sends points on one side of the
line to the other side of the line, and keeps points on the line invariant.
3. Show that any point can be move to another point by two reflections.
4. Show that any two rays sharing the same endpoint can be transformed
into each other by a reflection.
5. (Harder) Can we define the translation (as in R²) as a rigid motion in the
Poincaré Disk? Explain your answer
Transcribed Image Text:Rigid Motion in Poincaré Disk 1. Explain what is a reflection in the Poincaré Disk. 2. Show that a reflection in the Poincaré Disk sends points on one side of the line to the other side of the line, and keeps points on the line invariant. 3. Show that any point can be move to another point by two reflections. 4. Show that any two rays sharing the same endpoint can be transformed into each other by a reflection. 5. (Harder) Can we define the translation (as in R²) as a rigid motion in the Poincaré Disk? Explain your answer
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