Triangle inequality for angles in Euclidean space
39015
Prove the triangle inequality on the sphere $S^2$ in $\mathbb{R}^3$.
157572
The distance between two sets inside euclidean space
131543
inequality with three variables and condition
20816
Inequalities with assumptions and constraints
135120
Oppenheim's Inequality for triangles, American Mathematical Monthly problems
83034
Triangle inequality square #2
67851
Does $|x|^p$ with $0<p<1$ satisfy the triangle inequality on $\mathbb{R}$?
32963
proving the inequality $\triangle\leq \frac{1}{4}\sqrt{(a+b+c)\cdot abc}$
77493
Classic $c_r$-inequality in $l_r$ space: $E(|X+Y|^r)\leq c_r[E(|X|^r)+E(|Y|^r)]$
40952
Showing that sum of angles of hyperbolic triangle is strictly less than $\pi$
137507
triangular series and inequality
44823
Prove the general arithmetic-geometric mean inequality
21745
Proof of Heron's Formula for the area of a triangle
140695
polytopes as inequalities sistem solutions in R3 (x-y-z) cartesian space
140835
Inner Product Space Inequality
27954
Prove triangle inequality using the properties of absolute value
23119
An application of Jensen's Inequality