👉 Preshapes are mathematical structures that can be defined by a set of equations or inequalities. They are used in mathematics to represent and describe mathematical objects such as lines, circles, polygons, surfaces, etc.
Preshapes can be represented using various notations, including:
1.
Equation Form
: A preshape is represented by an equation. For example, the equation for a circle of radius r centered at the origin (x=0, y=0) is x^2 +