👉 A property of a function or curve is called "convex" if it has a minimum point at its vertex. This means that any line segment from one point to another on the curve will be less than the entire curve itself, with the exception of points where the tangent line crosses the curve. For example, a parabola opens upwards (or downwards) and is convex because it has a minimum point at the top or bottom of its opening. A circle is also convex because all points inside
