Hi Dan, I beg to differ with you on there not being any arc.
Think about a treadmill. You have two ends of a treadmill. One that stays stationary, in other words, in one position, and the second end, which is the end that will be moving up and down. If you raise the one end, and keep the other end in the same place, by raising the one end, you are essentially drawing a circle with the treadmill. I guess you can do the same thing with a string. If you hold one end of the string in each hand, keep the one hand in one place, and move the other hand around the stationary hand, you will be travelling in a circle, and so you will not be able to form any angles, except from the stationary position of the still hand. I understand that people want to create three angles out of this treadmill, but the fact is, you can only create one angle, and that is from the stationary end to the floor. Sure, you can create two more angles when the front end is lifted, but again, you are not creating a third angle to make a triangle, you are just making a slice of pie, not a triangle. I hope this makes what I'm saying a bit more clearer. Victor Co-moderator Blind Movie Buffs List Guidedogs List
