Yes, must be but not always. Most apple product edges fit this criteria, except some like the latest Apple watches which are a squircle and not a quintic superellipse.

Parametric equations define curves and surfaces through adjustable parameters, was used in architectural designs such as the Beijing National Stadium's steel web structure. It's a good tool to make graphic art too.

Even more fascinatingly Felix Candela's architectural shapes were primarily based on mathematical models of surfaces from Euclidean geometry, with a special focus on hyperbolic paraboloids, often called "hypars."

Candela became world famous for pioneering thin-shell concrete structures, particularly those with hyperbolic paraboloid shapes that are remarkably thin (often only 1.5 inches thick) but structurally very strong - he was a revolution in architecture.

Furthermore the 4 fathers of architecture:

• Le Corbusier
• Mies van der Rohe
• Frank Lloyd Wright, and
• Louis Kahn

Were GODS because they delved mathematics with engineering:

• Le Corbusier famously used the "Modulor" system, a scale of proportions based on the human body and the golden ratio, combining rectangles, squares, and circles to achieve harmonious, human-centered dimensions.

His buildings, like Villa Savoye, feature geometric rigor with golden section rectangles, circle arcs, and diagonal grids - chef's kiss.

• Frank Lloyd Wright embraced organic architecture, drawing mathematical inspiration from natural forms like spirals and helicoids seen in snail shells. His designs incorporate curves and geometric patterns based on the golden ratio and fractal-like repetitions that integrate buildings with their environment. The Guggenheim Museum in New York, with its iconic spiraling ramp, is a prime example.

• Louis Kahn is known for his use of monumental geometric forms, especially cubes, cylinders, and circles arranged with careful attention to spatial order and light. His works often feature cubes rotated relative to one another and intersecting geometric volumes, exemplified in buildings like the Yale University Art Gallery and the National Assembly in Bangladesh (Jatiya Sangsad Bhavan) (very famous to my parents).