New posts in Analytic Geometry

Show that all normals to $\gamma(t)=(\cos(t)+t\sin(t),\sin(t)-t\cos(t))$ are the same distance from the origin.

If $a$, $b$ and $c$ are sides of a triangle, then prove that $a^\text{2}(b+c-a) + b^\text{2}(c+a-b) + c^\text{2}(a+b-c)$ $\leqslant$ $3abc$

Why does my textbook say that equation $y = 7-3x$ has infinite number of solutions while it has only one root?

Is there a possible geometric method to find length of this equilateral triangle?

3D rotation orientation

The formal definition of “angle”

Perimeter of an equilateral triangle drawn with respect to a square.

Proving right angle using vectors

Proof of an inequality using analytic geometry

How to prove the shape of the "Flower of Venus"