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type Quadrilateral = object;
Represents a quadrilateral.
a: Point;
The first vertex of the quadrilateral. If initialized from a rectangle, corresponds to the rectangle's bottom left corner.
b: Point;
The second vertex of the quadrilateral. If initialized from a rectangle, corresponds to the rectangle's top left corner.
c: Point;
The third vertex of the quadrilateral. If initialized from a rectangle, corresponds to the rectangle's top right corner.
d: Point;
The fourth vertex of the quadrilateral. If initialized from a rectangle, corresponds to the rectangle's bottom right corner.