/sci/ - Science & Math » Thread #11064837

388KiB, 3000x1981, quadrilaterals.png

View Same Google iqdb SauceNAO

Anonymous Wed 16 Oct 18:42:56 2019 No.11064837 View Reply Original Report

Quoted By: >>11064856 >>11064861

Let's have a good old-fashioned geometry thread

Anonymous

Anonymous Wed 16 Oct 2019 18:45:53 No.11064848 Report

Quoted By: >>11065382

lmao I'm doing phd in geometry and I haven't done geometry in 6 years. any appropriate books on this ? something by coxeter maybe ?

Anonymous

View Same Google iqdb SauceNAO Saddle_point.svg.png, 434KiB, 1200x937

Anonymous Wed 16 Oct 2019 18:47:41 No.11064856 Report

Quoted By: >>11064866

>>11064837
fuck drawing these things out

Anonymous

Anonymous Wed 16 Oct 2019 18:48:49 No.11064861 Report

Quoted By:

>>11064837
Hell yeah, just let me boot up solidworks

Anonymous

Anonymous Wed 16 Oct 2019 18:49:45 No.11064863 Report

Quoted By: >>11064878

Wait, as I look at my OP picture, I have to ask:
Is a quadrilateral inside a circle (cyclic quadrilateral) similar to the one outside it going through the same points (tangential quadrilateral)?
That is, is VWZA1 similar to SRTU?

Anonymous

Anonymous Wed 16 Oct 2019 18:50:58 No.11064866 Report

Quoted By: >>11064885

>>11064856
oh shit, I TA multivariable calculus right now, I know your pain anon

Anonymous

View Same Google iqdb SauceNAO inscribed circumscribed.png, 435KiB, 3000x1981

Anonymous Wed 16 Oct 2019 18:55:37 No.11064878 Report

Quoted By: >>11064889

>>11064863
pic related, with other stuff removed and the diagonals added

Anonymous

Anonymous Wed 16 Oct 2019 18:57:14 No.11064885 Report

Quoted By: >>11064900 >>11065563

>>11064866
>TA
what’s it like being a cocksucking brainlet faggot?

Anonymous

View Same Google iqdb SauceNAO rhombus rectangle.png, 337KiB, 3000x1981

Anonymous Wed 16 Oct 2019 18:58:49 No.11064889 Report

Quoted By: >>11065400

>>11064878
Okay, they're not similar, but the diagonals ALWAYS cross, no matter how I drag it.
I feed in a rectangle, it spits out a rhombus. I wonder if that means anything.

Anonymous

View Same Google iqdb SauceNAO 4ABE01E4-5B0C-40F8-82AB-437326B8 (...).jpg, 1MiB, 1242x1649

Anonymous Wed 16 Oct 2019 19:02:45 No.11064900 Report

Quoted By: >>11064902

>>11064885

Anonymous

Anonymous Wed 16 Oct 2019 19:03:41 No.11064902 Report

Quoted By:

>>11064900
kys normalfag nigger

Anonymous

Anonymous Wed 16 Oct 2019 22:22:45 No.11065382 Report

Quoted By:

>>11064848
Hearthshorne, Coxeter, Moise are all good places to start

Anonymous

Anonymous Wed 16 Oct 2019 22:25:25 No.11065390 Report

Quoted By:

geometry problems where always my favorite in the math olympics course.

Anonymous

Anonymous Wed 16 Oct 2019 22:27:40 No.11065400 Report

Quoted By: >>11065742

>>11064889
>the diagonals always cross
move any point in the larger quad and they don't

Anonymous

Anonymous Wed 16 Oct 2019 23:37:46 No.11065563 Report

Quoted By:

>>11064885

Do you have autism? Serious Question.

Anonymous

Anonymous Thu 17 Oct 2019 00:40:29 No.11065742 Report

Quoted By:

>>11065400
The larger quad is defined as being the quadrilateral made by the tangents.

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