Immovable Labyrinth

In the land where triangles dreamt of wheels, a philosopher pondered the immutability of motion. Inside a triangle, he stood, but the triangle was no ordinary geometric figure; it whispered equations softly.

"In a triangle of three angles, where each angle spoke secrets, how do you find the radius of the invisible circle?"

The answer was c = rθ (Circle = Radius * Angle), but did he know it meant 'seek the circumference beyond the confines'?

Our philosopher contemplated the labyrinth of immovable paths. Each corridor echoed a past he had yet to live. Its walls were thick with secrets, its center held a memory yet to be discovered.

As he walked, he mused, “The past is like a circle; no starting point, no endpoint, just continuity.”

A riddle arose: “What is the sum of angles unseen?”

To this, the triangle replied with a gentle nod, "∞ (Infinity)".