1. (20pts) Design and instantiate a structure which has 2 fields: color (line color), positions (positions of a line). color is represented by a string and positions is represented by a list which has only 2 elements. Each element is a posn structure with 2 fields: x (x coordinate) and y ly coordinate). x and y are represented by numbers. (Do not forget to write down the functions constructors, selectors, and predicates, Solve Question 2,3 by using that structure) Distance of two points A(x,y) and B(x,y:) is given by: distance(A,B) = V(x; -x)+(9,-) 1. (20pts) Design and instantiate a structure which has 2 fields: color (line color), positions (positions of a line). color is represented by a string and positions is represented by a list which has only 2 elements. Each element is a posn structure with 2 fields: x (x coordinate) and y ly coordinate). x and y are represented by numbers. (Do not forget to write down the functions constructors, selectors, and predicates, Solve Question 2,3 by using that structure) Distance of two points A(x,y) and B(x,y:) is given by: distance(A,B) = V(x; -x)+(9,-)