👉 In mathematics, a "stiff" object is an object that cannot be flattened into a single line without breaking. In other words, it has no continuous lines of deformation and instead exhibits deformations that are only visible at certain points or edges. Examples include cubes, spheres, and prisms. For example, consider the cube with vertices at (0, 0, 0), (1, 0, 0), (0, 1, 0), and (0,
