; Purpose: to decide which season ;Contract: findMonth : number (month) ---> String ;Examole: (check-expect (findMonth 0) 'invalid) (check-expect (findMonth 145) 'invalid) ;Header: ; (define...

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;contract:
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Extracted text: ; Purpose: to decide which season ;Contract: findMonth : number (month) ---> String ;Examole: (check-expect (findMonth 0) 'invalid) (check-expect (findMonth 145) 'invalid) ;Header: ; (define (findMonth x) 'String) ;Template: (define (findMonth x) (cond ...x... 0) 'invalid) 12) 'invalid) ((<= ((=""> ..X. ... ( (and (>= ...x... 3) (<= ...x...="" 5))="" 'spring)="" (="" (and="" (="">= ...x... 6) (<= ...x...="" 8))="" 'summer)="" (="" (and="" (="">= ...x.. 9) (<= ...x...="" 11))="" 'fall)="" (else="" 'winter)))="" ;="" function:="" (define="" (findmonth="" x)="" (cond=""><= x="" 0)="" (="" (=""> x 12) 'invalid) ( (and (>= x 3) (<= x="" 5))="" 'spring)="" (="" (and="" (="">= x 6) (<= x="" 8))="" 'summer)="" (="" (and="" (="">= x 9) (<= x="" 11))="" 'fall)="" 'invalid)="" (else="" 'winter))="" ;test:="" (findmonth="" 4)="" (findmonth="">


Extracted text: 1. 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 (y 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(x2,y½) is given by: distance(A,B) = v(x,-x,}+(y,-y,}