12 bars of soap for $10.00 or 5 for 4.00 which is better? and why?

12 bars of soap for 10$ because when you divide 12/10 you get $1.20 per bar of soap. and when you divide 5/4 you get $1.25 per bar of soap. No only is it a little cheaper but you get more soap. 

Looking at it this way too: if you do purchase 5 for $4 but you want the 12 bars of soap the other deal has, you would still be paying more. You'd be paying $10.50 for 12 bars of soap with that deal. 

One unique triangle, because those angles add up to 180, and that's how many degrees there are in one triangle.

It says in the questions that it is 6.5?