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RE: SLC S23 Semana 6 || Geometría con GeoGebra: Más sobre triángulos, cuadriláteros y círculos
| Task | Comment | Grade |
|---|---|---|
| 1. Excircles (incircle and circumcircle). | Simply amazing! At first, I wanted to point out that there was no circumcircle around the triangle, but then I saw it in the next diagram. It's unclear why GeoGebra sometimes represents a right angle with an arc instead of a rectangle, even though it labels it as 90 degrees. I also forgot to mention that the auxiliary lines are not hidden but are drawn in a way that, on one hand, does not obstruct the main construction, and on the other hand, helps by complementing the overall picture. | 2✅/2 |
| 2. Euler's circle | Nothing to add, everything is very well depicted. | 2✅/2 |
| 3. Spieker circle, Taylor circle, Nagel circle, Apollonius circle, Malfatti circles, or Feuerbach circle. | It was interesting to learn about the Taylor circle, but when reading about its construction, the animation was distracting. A static diagram would have been better for the explanation, with the animation added at the end. Additionally, the triangle should have been more emphasized. | 2✅/2 |
| 4. Quadrilateral and circumscribe circle | It's good that the first diagram shows that not every quadrilateral can have a circumscribed circle. However, it would be better to do it the other way around—first the circle, then the quadrilateral. | 2✅/2 |
| 5. Quadrilateral with an inscribed circle | For some reason, AL || JK, forming a trapezoid. This is correct, but it represents a special case of a quadrilateral. You shouldn’t have limited it to just a trapezoid. | 0.7/1 |
| 6. Kite and quadrilateral with perpendicular diagonals | Something feels off here, possibly a 'translation difficulty' between languages. In the first diagram, if you connect the midpoints, you get a parallelogram. In the second diagram, each vertex should have been moved independently. Also, it’s better not to show cases where a vertex passes through the intersection of the diagonals—such quadrilaterals are not studied. The intersection of the diagonals should always remain within the quadrilateral, not outside of it. | 0.4/1 |
Thank you for your participation and completed work.
Total: 9.1⭐ / 10
Muchas gracias profesor por su evaluación y observaciones.
Feliz día..!