<span>1. The act or process of following in order or sequence.</span><span>2. A group of people or things arranged or following in order; a sequence: <span>"A succession of one-man stalls offered soft<span>drinks"
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The workers didn't learn how to completely manufacture a certain item. Instead, they learned a certain part of the process in manufacturing such item and they will repeat such process again and again, all day long. This is how the development of the industry impacted the way people lived and worked.
True, if the triangles had two obtuse angles, they would exceed the 180 degrees. The third angle would have no degrees!
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