👉 In mathematics, an envelope is a set of points that enclose a curve or surface. When we talk about envelopes in geometry, it's important to note that these are sets of points that form part of a continuous function or a smooth object. For example, let's say we have the curve \(y = x^2\) and we want to find its envelope. The envelope is the set of points where the curve intersects the y-axis at 0. The simplest way to define an envelope