# Tagged Questions

34 views

### what are the interesting geometric properties of a regular n-gon? [closed]

I want to know about the interesting geometric properties of a regular n-gon. I know there are lot of results on this subject. I am interest about simple geometric properties which are easy to ...
33 views

### Where can I find a good set of notes discussing main theorems/ideas surrounding non-orientable surfaces?

I'm currently looking at non-orientable surfaces, but know very little about them. Is there are good set of notes that will teach me the classical results surrounding non-orientable surfaces?
228 views

### Why is Volume^2 at most product of the 3 projections?

Is there a simple proof for $$\text{Vol}^2(P)\le \prod_{i=x,y,z} \text{Area}(\text{Proj}_i(P)),$$ where $P\subset \mathbb R^3$ and $\text{Proj}_z(P)$ denotes the projection of $P$ to the $z=0$ ...
68 views

### Question about Qing Liu's Algebraic Geometry book

I was just wondering what the real prerequisites are for reading Qing Liu's 'Algebraic Geometry and Arithmetic Curves', and if it is a good first book on the subject. In his preface he states that the ...
60 views

What is a good follow-up to Stillwell's Four Pillars of Geometry? Also Algebraic Geometry/ Topology sounds fun -- are there any good undergrad books on that?
51 views

### Good book on non-Euclidean geometry

What's a good book on non-Euclidean geometry for undergrads? Especially ones that consider hyperbolic and spherical trigonometry?
50 views

### Reference Request: Split-Complex Numbers

Does anyone have a recommendation for a good book on split-complex numbers? If it also covers dual numbers or the relation between split-complex numbers and special relativity or Minkowski 4-space or ...
15 views

### good text books for axiomatic solid geometry?

I read the book about plane geometry : Marvin Jay Greenberg Euclidean and non-euclidean but it's only for the plane geometry so I want know about axiomatic solid geometry. Can someone recommend a ...
78 views

### Reference request: algebraic methods in geometry

I am a (soon to be) third year undergraduate who has just finished courses in linear and abstract algebra. While I enjoyed the study of algebraic structures in their own right, my favorite part of the ...
66 views

### Where to learn Euclidean geometry in-depth?

I am interested in Euclidean geometry and using compass and rulers to do constructions. I took geometry in high school but I feel like it didn't go in-depth enough. Where can I learn this online? I am ...
128 views

### Beginning of Romance

I am a 17 guy from India. The fascination of maths has struck me recently, while I am in standard 12th. But all the resources I have, is some school textbooks. M.L Agrawal's of 11th and 12th. I don't ...
67 views

I would like to get some references which explains Gauss-Bonnet-Chern theorem and its original proof by Chern. I tried to read his paper published in 1944 "A Simple Intrinsic Proof of the Gauss-Bonnet ...
71 views

### Most accurate translation of Euclid's Elements

Which is the most accurate translation of the Elements by Euclid? I have found manybtranslations but there seem to be some differences in each version. I would like to know which is the closest to the ...
41 views

### Geometry basic problem

Hy! If i have a triangle with given: b-c=3 cm, a=6 cm and alpha is 30°, how do I draw this? Please help me by telling me where I can find this type of exercises online with explanations. Thank you!