Denshi Jisho — Online Japanese dictionary

成す なす 1: to build up; to establish;
2: to form; to become (a state);
3: to accomplish; to achieve; to succeed in;
4: to change into;
5: to do; to perform;
6: (Auxiliary verb) (Archaism) to intend to; to attempt; to try;
7: (Archaism) to have a child
Common word, Godan verb with su ending, Transitive verb 
成す角 なすかく formed angle; angle made
Expression 

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