3 ms·

I've played this a lot and introduced others to it. When others make the claim you do here I have always found that their solutions look good and plausible, but

I've played this a lot and introduced others to it. When others make the claim you do here I have always found that their solutions look good and plausible, but are not exact. It may be that you are the exception, and that your constructions are correct, but as with compiler errors, the problem is statistically more likely to be in your construction. I'm sure the devs would love to see a construction that is proven to be correct, but is not recognised by the system. Having a proof is key.

BigJono 10y ago
Keeping in mind that I have absolutely no idea what I'm doing, was never taught any of this stuff at school, and am stone cold stuck on 1.5, why is this not a solution to the Rhombus in Rectangle problem? It seems to match perfectly to the diagram and doesn't have any red points. http://i.imgur.com/QDqptQ4.png http://i.imgur.com/QDqptQ4.png
- irishsultan 10y ago
  That construction doesn't have 4 sides of equal length (although it's really close), which is required for the solution (you can see that by the 4 sides having a single mark through them, that indicates they have the same length)
- CarolineW 10y ago
  It's impossible to tell exactly what you've done, but here's what it looks like. Using the corner at bottom left as centre you've drawn a circle with radius equal to the long side, then you've done the same with the corner at bottom right. That gives you the point above, but closest to, the rectangle. Then you've joined that point to the corner at bottom left and marked the point where it crosses the top line. There is no reason why the length of the line crossing the rectangle should be equal to the right section of the divided top line. The top line of the rectangle can be moved up and down, and the two line lengths will vary in opposite directions. At some point they'll be equal, but in general they won't, whereas the problem requires that all four sides of the rhombus have equal length. If that's not clear I can write a longer description with diagrams, but I hope that explains why what you've got isn't a solution, even though it looks good.
- StavrosK 10y ago
  In addition to what the other commenters have said, you can press the "solution" button to see what the final rhombus should look like, and whether yours falls exactly on it.
- ColinWright 10y ago
  I was going to reply to you off-line, but you have no contact details in your profile, despite saying "Get in touch!" Perhaps you didn't realise that the "email" field in your profile is private and only visible to the mods. Logout and have a look at your profile and you'll see what I mean - no contact details. Hope you see this! Personally, I use "HN Replies"[0] to let me know if/when people reply to my comments, just for cases like this. [0] http://www.hnreplies.com/ http://www.hnreplies.com/

BigJono 10y ago

Keeping in mind that I have absolutely no idea what I'm doing, was never taught any of this stuff at school, and am stone cold stuck on 1.5, why is this not a solution to the Rhombus in Rectangle problem? It seems to match perfectly to the diagram and doesn't have any red points. http://i.imgur.com/QDqptQ4.png http://i.imgur.com/QDqptQ4.png

irishsultan 10y ago
That construction doesn't have 4 sides of equal length (although it's really close), which is required for the solution (you can see that by the 4 sides having a single mark through them, that indicates they have the same length)
CarolineW 10y ago
It's impossible to tell exactly what you've done, but here's what it looks like. Using the corner at bottom left as centre you've drawn a circle with radius equal to the long side, then you've done the same with the corner at bottom right. That gives you the point above, but closest to, the rectangle. Then you've joined that point to the corner at bottom left and marked the point where it crosses the top line. There is no reason why the length of the line crossing the rectangle should be equal to the right section of the divided top line. The top line of the rectangle can be moved up and down, and the two line lengths will vary in opposite directions. At some point they'll be equal, but in general they won't, whereas the problem requires that all four sides of the rhombus have equal length. If that's not clear I can write a longer description with diagrams, but I hope that explains why what you've got isn't a solution, even though it looks good.
StavrosK 10y ago
In addition to what the other commenters have said, you can press the "solution" button to see what the final rhombus should look like, and whether yours falls exactly on it.
ColinWright 10y ago
I was going to reply to you off-line, but you have no contact details in your profile, despite saying "Get in touch!" Perhaps you didn't realise that the "email" field in your profile is private and only visible to the mods. Logout and have a look at your profile and you'll see what I mean - no contact details. Hope you see this! Personally, I use "HN Replies"[0] to let me know if/when people reply to my comments, just for cases like this. [0] http://www.hnreplies.com/ http://www.hnreplies.com/