1 665c255d 2023-08-04 jrmu (define (make-center-width c w)
2 665c255d 2023-08-04 jrmu   (make-interval (- c w) (+ c w)))
3 665c255d 2023-08-04 jrmu (define (center i)
4 665c255d 2023-08-04 jrmu   (/ (+ (lower-bound i) (upper-bound i)) 2))
5 665c255d 2023-08-04 jrmu (define (width i)
6 665c255d 2023-08-04 jrmu   (/ (- (upper-bound i) (lower-bound i)) 2))