Triangle Centers, hurraaa!

jtico shared this question 8 years ago
Answered

I would like to thank the developers for bringing the triangle centers to Geogebra. That's is really, really a _fantastic_ addition. :D :D :D


As far I have tested it works like a charm. Wow!


Best regards,


Jtico

Comments (4)

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Hi, for GG we just copied a perl script and removed "$"s :) The real thanks should go to Jason Cantarella, who rolled up his sleeves and transcribed 3000 triangle centers to computer readable form (http://www.jasoncantarella....). But I'm glad you like it.


Note that if you need to prove that 3 lines are concurrent, you can now create their intersection and using IndexOf find out whether it belongs to the known triangle centers. Also combines nicely with TriangleCubic command, which currently supports "only" 100 cubics, but this is being enhanced manually.

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Hi.

I couldn't get to work the IndexOf command. I don't understand its syntax :cry: . I was expecting something like

    IndexOf[D,{A,B,C}]

where ABC are the vertices of a triangle and D is an arbitrary point.


Regards, jtico

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@jtico: you may try


IndexOf[D,Sequence[TriangleCenter[A,B,C,k],k,1,3000]]


@iotarho: any ideas for further common triangle centers welcome.

http://wiki.geogebra.org/en...


The ETC website is really slow, but we can't do anything about it.

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Ok, I see that I misunderstood your post.


But this is fantastic


you may try

IndexOf[D,Sequence[TriangleCenter[A,B,C,k],k,1,3000]]


Again, thank you very much :) :)


jtico

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