Shape
A mathematical figure made of points, lines, and surfaces, divided into plane shapes such as triangles and circles and solid shapes such as spheres and cubes.
Smartphone app icons are not rounded squares — they are "squircles," a portmanteau of square and circle. Defined by the mathematical equation |x|⁴ + |y|⁴ = r⁴, this superellipse shape gives a smoother, more pleasing impression than simply rounding the corners.
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