Timeline for A hard question about plane geometry
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 6, 2024 at 20:12 | comment | added | YNK | @sirous Thanks for the information. I found it. | |
| Dec 6, 2024 at 19:30 | comment | added | sirous | @YNK, This is a well known theorem. You can find it in WIKI. | |
| Dec 6, 2024 at 16:49 | comment | added | YNK | @sirous How do you know for sure that the center of the nine-point circle $N$ is the midpoint of $OH$? | |
| Nov 25, 2024 at 6:16 | history | edited | sirous | CC BY-SA 4.0 | added 26 characters in body |
| Nov 24, 2024 at 18:06 | comment | added | sirous | @CalvinLin, You are right. Thanks for pointing it out. I will revise my answer later. Too tired now! | |
| Nov 24, 2024 at 16:24 | comment | added | Calvin Lin | FWIW This makes no sense to me. Since E, F are interchangeable, saying that $T$ is the midpoint of $BS$ implies that $T$ is the midpoint of $QC$, which doesn't seem to be the case. $\quad$ Also, it would be helpful to define your points (apart from just the diagram) and explain the relationships. | |
| Nov 24, 2024 at 16:16 | comment | added | Calvin Lin | "diameter QC, which FT locates on" => Are you saying that CFTQ is the diameter of the circumcircle? If so, why doesn't it pass through O? | |
| Nov 24, 2024 at 15:50 | history | answered | sirous | CC BY-SA 4.0 |