The sides of a triangle are $a,b,c$, which are integers, and $a\le b\le c$. If $c$ is given, find the number of triangles possible?
99202
What is the number of triangles with integer sides, given the length of the longest side?
23979
Inequality involving sides of a triangle
115929
In a triangle $\angle A = 2\angle B$ iff $a^2 = b(b+c)$
73029
If a,b,c are sides of a triangle, prove: $ \sqrt{a+b-c} + \sqrt{b+c-a} + \sqrt{c+a-b} \le \sqrt{a} + \sqrt{b} + \sqrt{c} $
142144
Countable or uncountable; family of disjoint triangles?
148745
Determine if a number is the sum of two triangular numbers.
79777
An olympiad Geometry problem involving triangles
129002
Number of triangles formed by $m$ lines
134805
How many sides does a circle have?
87206
Prove that a triangle can be inscribed in the hyperbola $xy=c^2$ whose sides touch the parabola $y^2=4ax$.
106564
Suppose $A,B,C$ are sets. Prove that $A\mathbin\triangle B\subseteq C \iff A\cup C=B\cup C$.
100895
Prove $1 + \cos 2C - \cos 2A - \cos 2B = 4\sin A\sin B\cos C$ for $A$, $B$, $C$ the angles of a triangle
45702
For any triangle with sides $a$, $b$, $c$, show that $a^2b(a-b)+b^2c(b-c)+c^2a(c-a)\ge 0$
73907
Condition for 3 complex numbers to represent an equilateral triangle
44795
Sum of areas of triangles which have corners which are lattice points with 74 lattice points inside.
26222
how can I find the Side length Two squares inside an equilateral Triangle?
62126
Constructing a triangle given 2 sides and the inscribed circle's radius