the number is smaller because when multiplying with a fraction, it causes the number to get smaller, not bigger. When dividing with a fraction, it causes the number to get bigger, not smaller.
I might be wrong but i believe you can make more than one with those 3 angles. the 120 and 40 can make one and if angled right can make 2 and the 10 deg on one of the other angles lines would give you a 3rd.
