Answer:
1
Explanation:
a triangle has three sides and three angles and a rectangle has 4 sides so the formula is n-3 . no in this case equals 4 so 4-3=1
(D) a result of poor conditions and treatment like this lead to the formation b of Unions
High productivity growth played a key role in postwar economic growth. The highly skilled and educated labor force, extraordinary savings rates and accompanying levels of investment, and the low growth of Japan's labor force were major factors in the high rate of productivity growth.
I don't know if this is one of your options but it is correct
