Agift-wrapping box is in the shape of an oblique triangular prism. a triangular prism is shown. the bases are triangle a b c and triangle f e d. a bisector is drawn from point e to point g on side f d. line f d is extended to point h outside of the figure. another line is drawn from point c to point h to form a right angle. the length of e g is 10 inches, the length of f d is 15 inches, the length of c h is 8 inches, and the length of a f is 10 inches.