Modified pythagoras' theorem.
71756
diophantine equation: $x^2 +y^2 = z^n$
112314
On The Range Of The Tangent
61810
An application of Borel-Caratheodory theorem
43188
The $n^{th}$ root of the geometric mean of binomial coefficients.
84334
How to prove the Pythagoras theorem using vectors
76959
Uses of quadratic reciprocity theorem
27600
Gödel's (in)completeness theorems and the axiomatization of Euclidean geometry
103116
Prove that any odd number can be a leg in a Pythagorean Triple
4931
variation of the binomial theorem
140871
Different Applications of Sylow Theorems
104217
Alternative triangle inequality proof
93685
Erdős's proof of Sylvester's theorem
136644
Cyclic Quadrilateral Problems
131919
Vertices of equilateral triangle inscribed in the unit circle
157171
Gauss circle problem : a simple asymptotic estimation.
34393
Variation of Pythagorean triplets: $x^2+y^2 = z^3$
148934
Proof of Archimedes Principle