Which statement must be true to prove m∠1 + m∠2 + m∠3 = 180?.

M=60 60+60+60 or 60*3= 180 :)

With any turning vehicle, the rear wheels follow a shorter path than the front wheels. the longer the vehicle is, the greater the difference will be. truck drivers initially swing out before making a turn. what isn't shown in this illustration is as car straightens out, the front wheels must travel a greater distance and the tail end drags on the shortest path.